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Finding the Fourth Proportional to 218,767.95, 327,987.50 and 92,555.91

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Solution

The fourth proportional to 218,767.95, 327,987.50 and 92,555.91 is: 138,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,767.95 : 327,987.50 = 92,555.91 : x
  2. Step 2: Convert to fraction form
    218,767.95/327,987.50 = 92,555.91/x
  3. Step 3: Cross multiply
    218,767.95x = 327,987.50 × 92,555.91
  4. Step 4: Simplify right side
    218,767.95x = 30,357,181,068.35
  5. Step 5: Solve for x
    x = 30,357,181,068.35/218,767.95
  6. Step 6: Final answer
    x = 138,764.30

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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.