Home / 425,826.16-638,630.22-126,236.68

Finding the Fourth Proportional to 425,826.16, 638,630.22 and 126,236.68

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Solution

The fourth proportional to 425,826.16, 638,630.22 and 126,236.68 is: 189,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,826.16 : 638,630.22 = 126,236.68 : x
  2. Step 2: Convert to fraction form
    425,826.16/638,630.22 = 126,236.68/x
  3. Step 3: Cross multiply
    425,826.16x = 638,630.22 × 126,236.68
  4. Step 4: Simplify right side
    425,826.16x = 80,618,558,720.47
  5. Step 5: Solve for x
    x = 80,618,558,720.47/425,826.16
  6. Step 6: Final answer
    x = 189,322.70

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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.