Home / 425,918.22-639,000.58-137,723.72

Finding the Fourth Proportional to 425,918.22, 639,000.58 and 137,723.72

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Solution

The fourth proportional to 425,918.22, 639,000.58 and 137,723.72 is: 206,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,918.22 : 639,000.58 = 137,723.72 : x
  2. Step 2: Convert to fraction form
    425,918.22/639,000.58 = 137,723.72/x
  3. Step 3: Cross multiply
    425,918.22x = 639,000.58 × 137,723.72
  4. Step 4: Simplify right side
    425,918.22x = 88,005,533,678.68
  5. Step 5: Solve for x
    x = 88,005,533,678.68/425,918.22
  6. Step 6: Final answer
    x = 206,625.43

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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.