Home / 487,905.10-731,857.65-172,393.90

Finding the Fourth Proportional to 487,905.10, 731,857.65 and 172,393.90

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Solution

The fourth proportional to 487,905.10, 731,857.65 and 172,393.90 is: 258,590.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,905.10 : 731,857.65 = 172,393.90 : x
  2. Step 2: Convert to fraction form
    487,905.10/731,857.65 = 172,393.90/x
  3. Step 3: Cross multiply
    487,905.10x = 731,857.65 × 172,393.90
  4. Step 4: Simplify right side
    487,905.10x = 126,167,794,528.34
  5. Step 5: Solve for x
    x = 126,167,794,528.34/487,905.10
  6. Step 6: Final answer
    x = 258,590.85

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Similar ratio
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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.