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Finding the Fourth Proportional to 356,425.52, 491,553.16 and 220,437.86

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Solution

The fourth proportional to 356,425.52, 491,553.16 and 220,437.86 is: 304,010.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,425.52 : 491,553.16 = 220,437.86 : x
  2. Step 2: Convert to fraction form
    356,425.52/491,553.16 = 220,437.86/x
  3. Step 3: Cross multiply
    356,425.52x = 491,553.16 × 220,437.86
  4. Step 4: Simplify right side
    356,425.52x = 108,356,923,657.78
  5. Step 5: Solve for x
    x = 108,356,923,657.78/356,425.52
  6. Step 6: Final answer
    x = 304,010.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.