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Finding the Fourth Proportional to 220,139.80, 329,334.90 and 190,882.60

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Solution

The fourth proportional to 220,139.80, 329,334.90 and 190,882.60 is: 285,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,139.80 : 329,334.90 = 190,882.60 : x
  2. Step 2: Convert to fraction form
    220,139.80/329,334.90 = 190,882.60/x
  3. Step 3: Cross multiply
    220,139.80x = 329,334.90 × 190,882.60
  4. Step 4: Simplify right side
    220,139.80x = 62,864,301,982.74
  5. Step 5: Solve for x
    x = 62,864,301,982.74/220,139.80
  6. Step 6: Final answer
    x = 285,565.36

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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.