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Finding the Fourth Proportional to 259,553.76, 389,143.72 and 159,507.28

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Solution

The fourth proportional to 259,553.76, 389,143.72 and 159,507.28 is: 239,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,553.76 : 389,143.72 = 159,507.28 : x
  2. Step 2: Convert to fraction form
    259,553.76/389,143.72 = 159,507.28/x
  3. Step 3: Cross multiply
    259,553.76x = 389,143.72 × 159,507.28
  4. Step 4: Simplify right side
    259,553.76x = 62,071,256,306.28
  5. Step 5: Solve for x
    x = 62,071,256,306.28/259,553.76
  6. Step 6: Final answer
    x = 239,146.05

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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.