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Finding the Fourth Proportional to 260,439.96, 392,612 and 243,079.92

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Solution

The fourth proportional to 260,439.96, 392,612 and 243,079.92 is: 366,441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,439.96 : 392,612 = 243,079.92 : x
  2. Step 2: Convert to fraction form
    260,439.96/392,612 = 243,079.92/x
  3. Step 3: Cross multiply
    260,439.96x = 392,612 × 243,079.92
  4. Step 4: Simplify right side
    260,439.96x = 95,436,093,551.04
  5. Step 5: Solve for x
    x = 95,436,093,551.04/260,439.96
  6. Step 6: Final answer
    x = 366,441.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.