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Finding the Fourth Proportional to 221,979.44, 332,443.02 and 127,261.08

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Solution

The fourth proportional to 221,979.44, 332,443.02 and 127,261.08 is: 190,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,979.44 : 332,443.02 = 127,261.08 : x
  2. Step 2: Convert to fraction form
    221,979.44/332,443.02 = 127,261.08/x
  3. Step 3: Cross multiply
    221,979.44x = 332,443.02 × 127,261.08
  4. Step 4: Simplify right side
    221,979.44x = 42,307,057,763.66
  5. Step 5: Solve for x
    x = 42,307,057,763.66/221,979.44
  6. Step 6: Final answer
    x = 190,589.98

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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.