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Finding the Fourth Proportional to 220,040.64, 329,858.88 and 79,765.44

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Solution

The fourth proportional to 220,040.64, 329,858.88 and 79,765.44 is: 119,574.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,040.64 : 329,858.88 = 79,765.44 : x
  2. Step 2: Convert to fraction form
    220,040.64/329,858.88 = 79,765.44/x
  3. Step 3: Cross multiply
    220,040.64x = 329,858.88 × 79,765.44
  4. Step 4: Simplify right side
    220,040.64x = 26,311,338,701.11
  5. Step 5: Solve for x
    x = 26,311,338,701.11/220,040.64
  6. Step 6: Final answer
    x = 119,574.91

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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.