Home / 287,388,769.60-431,083,154.40-166,456,417.60

Finding the Fourth Proportional to 287,388,769.60, 431,083,154.40 and 166,456,417.60

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Solution

The fourth proportional to 287,388,769.60, 431,083,154.40 and 166,456,417.60 is: 249,684,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,388,769.60 : 431,083,154.40 = 166,456,417.60 : x
  2. Step 2: Convert to fraction form
    287,388,769.60/431,083,154.40 = 166,456,417.60/x
  3. Step 3: Cross multiply
    287,388,769.60x = 431,083,154.40 × 166,456,417.60
  4. Step 4: Simplify right side
    287,388,769.60x = 71,756,557,569,131,672
  5. Step 5: Solve for x
    x = 71,756,557,569,131,672/287,388,769.60
  6. Step 6: Final answer
    x = 249,684,626.40

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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.