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Finding the Fourth Proportional to 225,717.26, 311,487.83 and 123,740.87

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Solution

The fourth proportional to 225,717.26, 311,487.83 and 123,740.87 is: 170,761.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,717.26 : 311,487.83 = 123,740.87 : x
  2. Step 2: Convert to fraction form
    225,717.26/311,487.83 = 123,740.87/x
  3. Step 3: Cross multiply
    225,717.26x = 311,487.83 × 123,740.87
  4. Step 4: Simplify right side
    225,717.26x = 38,543,773,521.17
  5. Step 5: Solve for x
    x = 38,543,773,521.17/225,717.26
  6. Step 6: Final answer
    x = 170,761.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.