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Finding the Fourth Proportional to 373,659.68, 515,645.52 and 203,890.88

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Solution

The fourth proportional to 373,659.68, 515,645.52 and 203,890.88 is: 281,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,659.68 : 515,645.52 = 203,890.88 : x
  2. Step 2: Convert to fraction form
    373,659.68/515,645.52 = 203,890.88/x
  3. Step 3: Cross multiply
    373,659.68x = 515,645.52 × 203,890.88
  4. Step 4: Simplify right side
    373,659.68x = 105,135,418,840.86
  5. Step 5: Solve for x
    x = 105,135,418,840.86/373,659.68
  6. Step 6: Final answer
    x = 281,366.77

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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.