Home / 287,468,262.48-431,202,344.52-90,869,685.20

Finding the Fourth Proportional to 287,468,262.48, 431,202,344.52 and 90,869,685.20

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Solution

The fourth proportional to 287,468,262.48, 431,202,344.52 and 90,869,685.20 is: 136,304,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,468,262.48 : 431,202,344.52 = 90,869,685.20 : x
  2. Step 2: Convert to fraction form
    287,468,262.48/431,202,344.52 = 90,869,685.20/x
  3. Step 3: Cross multiply
    287,468,262.48x = 431,202,344.52 × 90,869,685.20
  4. Step 4: Simplify right side
    287,468,262.48x = 39,183,221,304,034,344
  5. Step 5: Solve for x
    x = 39,183,221,304,034,344/287,468,262.48
  6. Step 6: Final answer
    x = 136,304,512.25

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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.