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Finding the Fourth Proportional to 487,332, 730,914.12 and 132,374.58

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Solution

The fourth proportional to 487,332, 730,914.12 and 132,374.58 is: 198,539.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,332 : 730,914.12 = 132,374.58 : x
  2. Step 2: Convert to fraction form
    487,332/730,914.12 = 132,374.58/x
  3. Step 3: Cross multiply
    487,332x = 730,914.12 × 132,374.58
  4. Step 4: Simplify right side
    487,332x = 96,754,449,651.07
  5. Step 5: Solve for x
    x = 96,754,449,651.07/487,332
  6. Step 6: Final answer
    x = 198,539.09

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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.