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Finding the Fourth Proportional to 221,697.20, 332,545.80 and 162,648.20

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Solution

The fourth proportional to 221,697.20, 332,545.80 and 162,648.20 is: 243,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,697.20 : 332,545.80 = 162,648.20 : x
  2. Step 2: Convert to fraction form
    221,697.20/332,545.80 = 162,648.20/x
  3. Step 3: Cross multiply
    221,697.20x = 332,545.80 × 162,648.20
  4. Step 4: Simplify right side
    221,697.20x = 54,087,975,787.56
  5. Step 5: Solve for x
    x = 54,087,975,787.56/221,697.20
  6. Step 6: Final answer
    x = 243,972.30

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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.