Home / 287,388,638.10-431,082,957.15-166,456,286.10

Finding the Fourth Proportional to 287,388,638.10, 431,082,957.15 and 166,456,286.10

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Solution

The fourth proportional to 287,388,638.10, 431,082,957.15 and 166,456,286.10 is: 249,684,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,388,638.10 : 431,082,957.15 = 166,456,286.10 : x
  2. Step 2: Convert to fraction form
    287,388,638.10/431,082,957.15 = 166,456,286.10/x
  3. Step 3: Cross multiply
    287,388,638.10x = 431,082,957.15 × 166,456,286.10
  4. Step 4: Simplify right side
    287,388,638.10x = 71,756,468,048,194,432
  5. Step 5: Solve for x
    x = 71,756,468,048,194,432/287,388,638.10
  6. Step 6: Final answer
    x = 249,684,429.15

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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.