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Finding the Fourth Proportional to 221,718.20, 332,826.06 and 88,691.20

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Solution

The fourth proportional to 221,718.20, 332,826.06 and 88,691.20 is: 133,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,718.20 : 332,826.06 = 88,691.20 : x
  2. Step 2: Convert to fraction form
    221,718.20/332,826.06 = 88,691.20/x
  3. Step 3: Cross multiply
    221,718.20x = 332,826.06 × 88,691.20
  4. Step 4: Simplify right side
    221,718.20x = 29,518,742,652.67
  5. Step 5: Solve for x
    x = 29,518,742,652.67/221,718.20
  6. Step 6: Final answer
    x = 133,136.31

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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.