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Finding the Fourth Proportional to 558,850.80, 838,267.96 and 138,126.64

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Solution

The fourth proportional to 558,850.80, 838,267.96 and 138,126.64 is: 207,187.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,850.80 : 838,267.96 = 138,126.64 : x
  2. Step 2: Convert to fraction form
    558,850.80/838,267.96 = 138,126.64/x
  3. Step 3: Cross multiply
    558,850.80x = 838,267.96 × 138,126.64
  4. Step 4: Simplify right side
    558,850.80x = 115,787,136,734.45
  5. Step 5: Solve for x
    x = 115,787,136,734.45/558,850.80
  6. Step 6: Final answer
    x = 207,187.92

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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.