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Finding the Fourth Proportional to 225,487.40, 311,169.20 and 123,512.04

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Solution

The fourth proportional to 225,487.40, 311,169.20 and 123,512.04 is: 170,444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,487.40 : 311,169.20 = 123,512.04 : x
  2. Step 2: Convert to fraction form
    225,487.40/311,169.20 = 123,512.04/x
  3. Step 3: Cross multiply
    225,487.40x = 311,169.20 × 123,512.04
  4. Step 4: Simplify right side
    225,487.40x = 38,433,142,059.61
  5. Step 5: Solve for x
    x = 38,433,142,059.61/225,487.40
  6. Step 6: Final answer
    x = 170,444.75

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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.