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Finding the Fourth Proportional to 457,944.60, 686,906.10 and 125,520.60

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Solution

The fourth proportional to 457,944.60, 686,906.10 and 125,520.60 is: 188,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,944.60 : 686,906.10 = 125,520.60 : x
  2. Step 2: Convert to fraction form
    457,944.60/686,906.10 = 125,520.60/x
  3. Step 3: Cross multiply
    457,944.60x = 686,906.10 × 125,520.60
  4. Step 4: Simplify right side
    457,944.60x = 86,220,865,815.66
  5. Step 5: Solve for x
    x = 86,220,865,815.66/457,944.60
  6. Step 6: Final answer
    x = 188,277.94

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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.