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Finding the Fourth Proportional to 218,855.82, 328,318.86 and 92,497.32

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Solution

The fourth proportional to 218,855.82, 328,318.86 and 92,497.32 is: 138,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,855.82 : 328,318.86 = 92,497.32 : x
  2. Step 2: Convert to fraction form
    218,855.82/328,318.86 = 92,497.32/x
  3. Step 3: Cross multiply
    218,855.82x = 328,318.86 × 92,497.32
  4. Step 4: Simplify right side
    218,855.82x = 30,368,614,655.46
  5. Step 5: Solve for x
    x = 30,368,614,655.46/218,855.82
  6. Step 6: Final answer
    x = 138,760.83

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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.