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Finding the Fourth Proportional to 445,859.10, 669,226.05 and 221,472.90

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Solution

The fourth proportional to 445,859.10, 669,226.05 and 221,472.90 is: 332,426.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,859.10 : 669,226.05 = 221,472.90 : x
  2. Step 2: Convert to fraction form
    445,859.10/669,226.05 = 221,472.90/x
  3. Step 3: Cross multiply
    445,859.10x = 669,226.05 × 221,472.90
  4. Step 4: Simplify right side
    445,859.10x = 148,215,434,049.05
  5. Step 5: Solve for x
    x = 148,215,434,049.05/445,859.10
  6. Step 6: Final answer
    x = 332,426.62

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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.