Home / 250,385.29-345,520.43-137,205.61

Finding the Fourth Proportional to 250,385.29, 345,520.43 and 137,205.61

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Solution

The fourth proportional to 250,385.29, 345,520.43 and 137,205.61 is: 189,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,385.29 : 345,520.43 = 137,205.61 : x
  2. Step 2: Convert to fraction form
    250,385.29/345,520.43 = 137,205.61/x
  3. Step 3: Cross multiply
    250,385.29x = 345,520.43 × 137,205.61
  4. Step 4: Simplify right side
    250,385.29x = 47,407,340,679.58
  5. Step 5: Solve for x
    x = 47,407,340,679.58/250,385.29
  6. Step 6: Final answer
    x = 189,337.56

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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.