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Finding the Fourth Proportional to 221,421.90, 332,132.85 and 204,314.70

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Solution

The fourth proportional to 221,421.90, 332,132.85 and 204,314.70 is: 306,472.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,421.90 : 332,132.85 = 204,314.70 : x
  2. Step 2: Convert to fraction form
    221,421.90/332,132.85 = 204,314.70/x
  3. Step 3: Cross multiply
    221,421.90x = 332,132.85 × 204,314.70
  4. Step 4: Simplify right side
    221,421.90x = 67,859,623,607.90
  5. Step 5: Solve for x
    x = 67,859,623,607.90/221,421.90
  6. Step 6: Final answer
    x = 306,472.05

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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.