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Finding the Fourth Proportional to 220,003.40, 329,940.30 and 86,839.40

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Solution

The fourth proportional to 220,003.40, 329,940.30 and 86,839.40 is: 130,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,003.40 : 329,940.30 = 86,839.40 : x
  2. Step 2: Convert to fraction form
    220,003.40/329,940.30 = 86,839.40/x
  3. Step 3: Cross multiply
    220,003.40x = 329,940.30 × 86,839.40
  4. Step 4: Simplify right side
    220,003.40x = 28,651,817,687.82
  5. Step 5: Solve for x
    x = 28,651,817,687.82/220,003.40
  6. Step 6: Final answer
    x = 130,233.52

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1.5x scale

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.