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Finding the Fourth Proportional to 368,253.28, 549,691.52 and 315,998.56

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Solution

The fourth proportional to 368,253.28, 549,691.52 and 315,998.56 is: 471,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,253.28 : 549,691.52 = 315,998.56 : x
  2. Step 2: Convert to fraction form
    368,253.28/549,691.52 = 315,998.56/x
  3. Step 3: Cross multiply
    368,253.28x = 549,691.52 × 315,998.56
  4. Step 4: Simplify right side
    368,253.28x = 173,701,728,764.21
  5. Step 5: Solve for x
    x = 173,701,728,764.21/368,253.28
  6. Step 6: Final answer
    x = 471,690.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.