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Finding the Fourth Proportional to 221,447.70, 332,220.15 and 71,694.90

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Solution

The fourth proportional to 221,447.70, 332,220.15 and 71,694.90 is: 107,558.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,447.70 : 332,220.15 = 71,694.90 : x
  2. Step 2: Convert to fraction form
    221,447.70/332,220.15 = 71,694.90/x
  3. Step 3: Cross multiply
    221,447.70x = 332,220.15 × 71,694.90
  4. Step 4: Simplify right side
    221,447.70x = 23,818,490,432.24
  5. Step 5: Solve for x
    x = 23,818,490,432.24/221,447.70
  6. Step 6: Final answer
    x = 107,558.08

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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.