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Finding the Fourth Proportional to 372,499.76, 558,312.14 and 172,397.57

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Solution

The fourth proportional to 372,499.76, 558,312.14 and 172,397.57 is: 258,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,499.76 : 558,312.14 = 172,397.57 : x
  2. Step 2: Convert to fraction form
    372,499.76/558,312.14 = 172,397.57/x
  3. Step 3: Cross multiply
    372,499.76x = 558,312.14 × 172,397.57
  4. Step 4: Simplify right side
    372,499.76x = 96,251,653,876.93
  5. Step 5: Solve for x
    x = 96,251,653,876.93/372,499.76
  6. Step 6: Final answer
    x = 258,393.87

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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.