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Finding the Fourth Proportional to 278,877.60, 384,850.98 and 151,553.20

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Solution

The fourth proportional to 278,877.60, 384,850.98 and 151,553.20 is: 209,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,877.60 : 384,850.98 = 151,553.20 : x
  2. Step 2: Convert to fraction form
    278,877.60/384,850.98 = 151,553.20/x
  3. Step 3: Cross multiply
    278,877.60x = 384,850.98 × 151,553.20
  4. Step 4: Simplify right side
    278,877.60x = 58,325,397,542.14
  5. Step 5: Solve for x
    x = 58,325,397,542.14/278,877.60
  6. Step 6: Final answer
    x = 209,143.36

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1.5x scale

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.