Home / 425,947.05-638,733.38-159,520.68

Finding the Fourth Proportional to 425,947.05, 638,733.38 and 159,520.68

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Solution

The fourth proportional to 425,947.05, 638,733.38 and 159,520.68 is: 239,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,947.05 : 638,733.38 = 159,520.68 : x
  2. Step 2: Convert to fraction form
    425,947.05/638,733.38 = 159,520.68/x
  3. Step 3: Cross multiply
    425,947.05x = 638,733.38 × 159,520.68
  4. Step 4: Simplify right side
    425,947.05x = 101,891,182,318.70
  5. Step 5: Solve for x
    x = 101,891,182,318.70/425,947.05
  6. Step 6: Final answer
    x = 239,210.91

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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.