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Finding the Fourth Proportional to 373,655.68, 515,657.28 and 203,899.12

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Solution

The fourth proportional to 373,655.68, 515,657.28 and 203,899.12 is: 281,387.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,655.68 : 515,657.28 = 203,899.12 : x
  2. Step 2: Convert to fraction form
    373,655.68/515,657.28 = 203,899.12/x
  3. Step 3: Cross multiply
    373,655.68x = 515,657.28 × 203,899.12
  4. Step 4: Simplify right side
    373,655.68x = 105,142,065,613.59
  5. Step 5: Solve for x
    x = 105,142,065,613.59/373,655.68
  6. Step 6: Final answer
    x = 281,387.57

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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.