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Finding the Fourth Proportional to 616,531.20, 924,105.60 and 261,484.80

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Solution

The fourth proportional to 616,531.20, 924,105.60 and 261,484.80 is: 391,934.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,531.20 : 924,105.60 = 261,484.80 : x
  2. Step 2: Convert to fraction form
    616,531.20/924,105.60 = 261,484.80/x
  3. Step 3: Cross multiply
    616,531.20x = 924,105.60 × 261,484.80
  4. Step 4: Simplify right side
    616,531.20x = 241,639,567,994.88
  5. Step 5: Solve for x
    x = 241,639,567,994.88/616,531.20
  6. Step 6: Final answer
    x = 391,934.05

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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.