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Finding the Fourth Proportional to 203,381.92, 280,663.50 and 112,737.52

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Solution

The fourth proportional to 203,381.92, 280,663.50 and 112,737.52 is: 155,575.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,381.92 : 280,663.50 = 112,737.52 : x
  2. Step 2: Convert to fraction form
    203,381.92/280,663.50 = 112,737.52/x
  3. Step 3: Cross multiply
    203,381.92x = 280,663.50 × 112,737.52
  4. Step 4: Simplify right side
    203,381.92x = 31,641,306,944.52
  5. Step 5: Solve for x
    x = 31,641,306,944.52/203,381.92
  6. Step 6: Final answer
    x = 155,575.81

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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.