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Finding the Fourth Proportional to 373,494.13, 515,423.53 and 203,731.90

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Solution

The fourth proportional to 373,494.13, 515,423.53 and 203,731.90 is: 281,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,494.13 : 515,423.53 = 203,731.90 : x
  2. Step 2: Convert to fraction form
    373,494.13/515,423.53 = 203,731.90/x
  3. Step 3: Cross multiply
    373,494.13x = 515,423.53 × 203,731.90
  4. Step 4: Simplify right side
    373,494.13x = 105,008,215,071.61
  5. Step 5: Solve for x
    x = 105,008,215,071.61/373,494.13
  6. Step 6: Final answer
    x = 281,150.91

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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.