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Finding the Fourth Proportional to 221,373.64, 332,059.38 and 102,979.72

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Solution

The fourth proportional to 221,373.64, 332,059.38 and 102,979.72 is: 154,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,373.64 : 332,059.38 = 102,979.72 : x
  2. Step 2: Convert to fraction form
    221,373.64/332,059.38 = 102,979.72/x
  3. Step 3: Cross multiply
    221,373.64x = 332,059.38 × 102,979.72
  4. Step 4: Simplify right side
    221,373.64x = 34,195,381,975.77
  5. Step 5: Solve for x
    x = 34,195,381,975.77/221,373.64
  6. Step 6: Final answer
    x = 154,469.08

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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.