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Finding the Fourth Proportional to 487,863.19, 731,800.25 and 172,098.66

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Solution

The fourth proportional to 487,863.19, 731,800.25 and 172,098.66 is: 258,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,863.19 : 731,800.25 = 172,098.66 : x
  2. Step 2: Convert to fraction form
    487,863.19/731,800.25 = 172,098.66/x
  3. Step 3: Cross multiply
    487,863.19x = 731,800.25 × 172,098.66
  4. Step 4: Simplify right side
    487,863.19x = 125,941,842,412.67
  5. Step 5: Solve for x
    x = 125,941,842,412.67/487,863.19
  6. Step 6: Final answer
    x = 258,149.92

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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.