Home / 487,921.68-731,733.12-172,304.64

Finding the Fourth Proportional to 487,921.68, 731,733.12 and 172,304.64

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Solution

The fourth proportional to 487,921.68, 731,733.12 and 172,304.64 is: 258,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,921.68 : 731,733.12 = 172,304.64 : x
  2. Step 2: Convert to fraction form
    487,921.68/731,733.12 = 172,304.64/x
  3. Step 3: Cross multiply
    487,921.68x = 731,733.12 × 172,304.64
  4. Step 4: Simplify right side
    487,921.68x = 126,081,011,817.68
  5. Step 5: Solve for x
    x = 126,081,011,817.68/487,921.68
  6. Step 6: Final answer
    x = 258,404.20

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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.