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Finding the Fourth Proportional to 221,509.56, 332,269.02 and 79,364.10

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Solution

The fourth proportional to 221,509.56, 332,269.02 and 79,364.10 is: 119,047.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,509.56 : 332,269.02 = 79,364.10 : x
  2. Step 2: Convert to fraction form
    221,509.56/332,269.02 = 79,364.10/x
  3. Step 3: Cross multiply
    221,509.56x = 332,269.02 × 79,364.10
  4. Step 4: Simplify right side
    221,509.56x = 26,370,231,730.18
  5. Step 5: Solve for x
    x = 26,370,231,730.18/221,509.56
  6. Step 6: Final answer
    x = 119,047.83

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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.