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Finding the Fourth Proportional to 278,769,794.40, 418,154,691.60 and 169,930,677.60

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Solution

The fourth proportional to 278,769,794.40, 418,154,691.60 and 169,930,677.60 is: 254,896,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,769,794.40 : 418,154,691.60 = 169,930,677.60 : x
  2. Step 2: Convert to fraction form
    278,769,794.40/418,154,691.60 = 169,930,677.60/x
  3. Step 3: Cross multiply
    278,769,794.40x = 418,154,691.60 × 169,930,677.60
  4. Step 4: Simplify right side
    278,769,794.40x = 71,057,310,085,207,032
  5. Step 5: Solve for x
    x = 71,057,310,085,207,032/278,769,794.40
  6. Step 6: Final answer
    x = 254,896,016.40

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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.