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Finding the Fourth Proportional to 664,572.46, 996,832.76 and 221,340.46

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Solution

The fourth proportional to 664,572.46, 996,832.76 and 221,340.46 is: 332,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,572.46 : 996,832.76 = 221,340.46 : x
  2. Step 2: Convert to fraction form
    664,572.46/996,832.76 = 221,340.46/x
  3. Step 3: Cross multiply
    664,572.46x = 996,832.76 × 221,340.46
  4. Step 4: Simplify right side
    664,572.46x = 220,639,421,641.47
  5. Step 5: Solve for x
    x = 220,639,421,641.47/664,572.46
  6. Step 6: Final answer
    x = 332,002.05

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Similar ratio
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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.