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Finding the Fourth Proportional to 218,013.30, 327,068.55 and 84,881.70

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Solution

The fourth proportional to 218,013.30, 327,068.55 and 84,881.70 is: 127,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,013.30 : 327,068.55 = 84,881.70 : x
  2. Step 2: Convert to fraction form
    218,013.30/327,068.55 = 84,881.70/x
  3. Step 3: Cross multiply
    218,013.30x = 327,068.55 × 84,881.70
  4. Step 4: Simplify right side
    218,013.30x = 27,762,134,540.54
  5. Step 5: Solve for x
    x = 27,762,134,540.54/218,013.30
  6. Step 6: Final answer
    x = 127,341.47

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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.