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Finding the Fourth Proportional to 408,990.96, 564,367.32 and 239,191.92

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Solution

The fourth proportional to 408,990.96, 564,367.32 and 239,191.92 is: 330,061.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,990.96 : 564,367.32 = 239,191.92 : x
  2. Step 2: Convert to fraction form
    408,990.96/564,367.32 = 239,191.92/x
  3. Step 3: Cross multiply
    408,990.96x = 564,367.32 × 239,191.92
  4. Step 4: Simplify right side
    408,990.96x = 134,992,102,856.05
  5. Step 5: Solve for x
    x = 134,992,102,856.05/408,990.96
  6. Step 6: Final answer
    x = 330,061.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.