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Finding the Fourth Proportional to 439,398.85, 658,499.71 and 268,680.35

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Solution

The fourth proportional to 439,398.85, 658,499.71 and 268,680.35 is: 402,654.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,398.85 : 658,499.71 = 268,680.35 : x
  2. Step 2: Convert to fraction form
    439,398.85/658,499.71 = 268,680.35/x
  3. Step 3: Cross multiply
    439,398.85x = 658,499.71 × 268,680.35
  4. Step 4: Simplify right side
    439,398.85x = 176,925,932,750.75
  5. Step 5: Solve for x
    x = 176,925,932,750.75/439,398.85
  6. Step 6: Final answer
    x = 402,654.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.