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Finding the Fourth Proportional to 392,671.59, 541,854.93 and 220,580.20

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Solution

The fourth proportional to 392,671.59, 541,854.93 and 220,580.20 is: 304,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,671.59 : 541,854.93 = 220,580.20 : x
  2. Step 2: Convert to fraction form
    392,671.59/541,854.93 = 220,580.20/x
  3. Step 3: Cross multiply
    392,671.59x = 541,854.93 × 220,580.20
  4. Step 4: Simplify right side
    392,671.59x = 119,522,468,830.39
  5. Step 5: Solve for x
    x = 119,522,468,830.39/392,671.59
  6. Step 6: Final answer
    x = 304,382.78

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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.