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Finding the Fourth Proportional to 398,248.65, 549,658.31 and 228,593.61

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Solution

The fourth proportional to 398,248.65, 549,658.31 and 228,593.61 is: 315,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,248.65 : 549,658.31 = 228,593.61 : x
  2. Step 2: Convert to fraction form
    398,248.65/549,658.31 = 228,593.61/x
  3. Step 3: Cross multiply
    398,248.65x = 549,658.31 × 228,593.61
  4. Step 4: Simplify right side
    398,248.65x = 125,648,376,206.43
  5. Step 5: Solve for x
    x = 125,648,376,206.43/398,248.65
  6. Step 6: Final answer
    x = 315,502.33

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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.