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Finding the Fourth Proportional to 221,553.96, 332,408.72 and 138,350.76

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Solution

The fourth proportional to 221,553.96, 332,408.72 and 138,350.76 is: 207,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,553.96 : 332,408.72 = 138,350.76 : x
  2. Step 2: Convert to fraction form
    221,553.96/332,408.72 = 138,350.76/x
  3. Step 3: Cross multiply
    221,553.96x = 332,408.72 × 138,350.76
  4. Step 4: Simplify right side
    221,553.96x = 45,988,999,042.63
  5. Step 5: Solve for x
    x = 45,988,999,042.63/221,553.96
  6. Step 6: Final answer
    x = 207,574.71

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1.5x scale

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.