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Finding the Fourth Proportional to 425,350.80, 638,026.11 and 125,808.03

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Solution

The fourth proportional to 425,350.80, 638,026.11 and 125,808.03 is: 188,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,350.80 : 638,026.11 = 125,808.03 : x
  2. Step 2: Convert to fraction form
    425,350.80/638,026.11 = 125,808.03/x
  3. Step 3: Cross multiply
    425,350.80x = 638,026.11 × 125,808.03
  4. Step 4: Simplify right side
    425,350.80x = 80,268,807,987.66
  5. Step 5: Solve for x
    x = 80,268,807,987.66/425,350.80
  6. Step 6: Final answer
    x = 188,712.02

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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.