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Finding the Fourth Proportional to 218,717.80, 328,230.30 and 94,148.20

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Solution

The fourth proportional to 218,717.80, 328,230.30 and 94,148.20 is: 141,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.80 : 328,230.30 = 94,148.20 : x
  2. Step 2: Convert to fraction form
    218,717.80/328,230.30 = 94,148.20/x
  3. Step 3: Cross multiply
    218,717.80x = 328,230.30 × 94,148.20
  4. Step 4: Simplify right side
    218,717.80x = 30,902,291,930.46
  5. Step 5: Solve for x
    x = 30,902,291,930.46/218,717.80
  6. Step 6: Final answer
    x = 141,288.42

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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.