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Finding the Fourth Proportional to 259,991.19, 389,937.46 and 126,737.43

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Solution

The fourth proportional to 259,991.19, 389,937.46 and 126,737.43 is: 190,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,991.19 : 389,937.46 = 126,737.43 : x
  2. Step 2: Convert to fraction form
    259,991.19/389,937.46 = 126,737.43/x
  3. Step 3: Cross multiply
    259,991.19x = 389,937.46 × 126,737.43
  4. Step 4: Simplify right side
    259,991.19x = 49,419,671,541.13
  5. Step 5: Solve for x
    x = 49,419,671,541.13/259,991.19
  6. Step 6: Final answer
    x = 190,082.10

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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.