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Finding the Fourth Proportional to 223,759.61, 335,640.33 and 90,642.39

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Solution

The fourth proportional to 223,759.61, 335,640.33 and 90,642.39 is: 135,963.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,759.61 : 335,640.33 = 90,642.39 : x
  2. Step 2: Convert to fraction form
    223,759.61/335,640.33 = 90,642.39/x
  3. Step 3: Cross multiply
    223,759.61x = 335,640.33 × 90,642.39
  4. Step 4: Simplify right side
    223,759.61x = 30,423,239,560.18
  5. Step 5: Solve for x
    x = 30,423,239,560.18/223,759.61
  6. Step 6: Final answer
    x = 135,963.95

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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.