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Finding the Fourth Proportional to 221,382.06, 332,206.13 and 79,216.12

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Solution

The fourth proportional to 221,382.06, 332,206.13 and 79,216.12 is: 118,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,382.06 : 332,206.13 = 79,216.12 : x
  2. Step 2: Convert to fraction form
    221,382.06/332,206.13 = 79,216.12/x
  3. Step 3: Cross multiply
    221,382.06x = 332,206.13 × 79,216.12
  4. Step 4: Simplify right side
    221,382.06x = 26,316,080,658.82
  5. Step 5: Solve for x
    x = 26,316,080,658.82/221,382.06
  6. Step 6: Final answer
    x = 118,871.79

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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.