Home / 218,815.17-328,257.78-92,456.63

Finding the Fourth Proportional to 218,815.17, 328,257.78 and 92,456.63

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Solution

The fourth proportional to 218,815.17, 328,257.78 and 92,456.63 is: 138,699.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,815.17 : 328,257.78 = 92,456.63 : x
  2. Step 2: Convert to fraction form
    218,815.17/328,257.78 = 92,456.63/x
  3. Step 3: Cross multiply
    218,815.17x = 328,257.78 × 92,456.63
  4. Step 4: Simplify right side
    218,815.17x = 30,349,608,110.08
  5. Step 5: Solve for x
    x = 30,349,608,110.08/218,815.17
  6. Step 6: Final answer
    x = 138,699.74

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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.