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Finding the Fourth Proportional to 221,717.52, 332,344.08 and 103,291.20

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Solution

The fourth proportional to 221,717.52, 332,344.08 and 103,291.20 is: 154,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,717.52 : 332,344.08 = 103,291.20 : x
  2. Step 2: Convert to fraction form
    221,717.52/332,344.08 = 103,291.20/x
  3. Step 3: Cross multiply
    221,717.52x = 332,344.08 × 103,291.20
  4. Step 4: Simplify right side
    221,717.52x = 34,328,218,836.10
  5. Step 5: Solve for x
    x = 34,328,218,836.10/221,717.52
  6. Step 6: Final answer
    x = 154,828.63

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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.