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Finding the Fourth Proportional to 437,543.38, 656,411.37 and 133,939.95

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Solution

The fourth proportional to 437,543.38, 656,411.37 and 133,939.95 is: 200,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,543.38 : 656,411.37 = 133,939.95 : x
  2. Step 2: Convert to fraction form
    437,543.38/656,411.37 = 133,939.95/x
  3. Step 3: Cross multiply
    437,543.38x = 656,411.37 × 133,939.95
  4. Step 4: Simplify right side
    437,543.38x = 87,919,706,077.23
  5. Step 5: Solve for x
    x = 87,919,706,077.23/437,543.38
  6. Step 6: Final answer
    x = 200,939.40

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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.