Home / 287,388,617.10-431,082,925.65-166,456,265.10

Finding the Fourth Proportional to 287,388,617.10, 431,082,925.65 and 166,456,265.10

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Solution

The fourth proportional to 287,388,617.10, 431,082,925.65 and 166,456,265.10 is: 249,684,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,388,617.10 : 431,082,925.65 = 166,456,265.10 : x
  2. Step 2: Convert to fraction form
    287,388,617.10/431,082,925.65 = 166,456,265.10/x
  3. Step 3: Cross multiply
    287,388,617.10x = 431,082,925.65 × 166,456,265.10
  4. Step 4: Simplify right side
    287,388,617.10x = 71,756,453,752,079,984
  5. Step 5: Solve for x
    x = 71,756,453,752,079,984/287,388,617.10
  6. Step 6: Final answer
    x = 249,684,397.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.