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Finding the Fourth Proportional to 260,003.32, 389,737.40 and 126,718.65

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Solution

The fourth proportional to 260,003.32, 389,737.40 and 126,718.65 is: 189,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,003.32 : 389,737.40 = 126,718.65 : x
  2. Step 2: Convert to fraction form
    260,003.32/389,737.40 = 126,718.65/x
  3. Step 3: Cross multiply
    260,003.32x = 389,737.40 × 126,718.65
  4. Step 4: Simplify right side
    260,003.32x = 49,386,996,548.92
  5. Step 5: Solve for x
    x = 49,386,996,548.92/260,003.32
  6. Step 6: Final answer
    x = 189,947.56

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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.