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Finding the Fourth Proportional to 215,686.53, 323,517.94 and 65,926.73

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Solution

The fourth proportional to 215,686.53, 323,517.94 and 65,926.73 is: 98,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,686.53 : 323,517.94 = 65,926.73 : x
  2. Step 2: Convert to fraction form
    215,686.53/323,517.94 = 65,926.73/x
  3. Step 3: Cross multiply
    215,686.53x = 323,517.94 × 65,926.73
  4. Step 4: Simplify right side
    215,686.53x = 21,328,480,524.51
  5. Step 5: Solve for x
    x = 21,328,480,524.51/215,686.53
  6. Step 6: Final answer
    x = 98,886.47

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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.