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Finding the Fourth Proportional to 488,262.40, 731,956.20 and 319,863.40

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Solution

The fourth proportional to 488,262.40, 731,956.20 and 319,863.40 is: 479,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,262.40 : 731,956.20 = 319,863.40 : x
  2. Step 2: Convert to fraction form
    488,262.40/731,956.20 = 319,863.40/x
  3. Step 3: Cross multiply
    488,262.40x = 731,956.20 × 319,863.40
  4. Step 4: Simplify right side
    488,262.40x = 234,125,998,783.08
  5. Step 5: Solve for x
    x = 234,125,998,783.08/488,262.40
  6. Step 6: Final answer
    x = 479,508.56

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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.