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Finding the Fourth Proportional to 220,521.80, 330,417.90 and 126,864.20

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Solution

The fourth proportional to 220,521.80, 330,417.90 and 126,864.20 is: 190,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,521.80 : 330,417.90 = 126,864.20 : x
  2. Step 2: Convert to fraction form
    220,521.80/330,417.90 = 126,864.20/x
  3. Step 3: Cross multiply
    220,521.80x = 330,417.90 × 126,864.20
  4. Step 4: Simplify right side
    220,521.80x = 41,918,202,549.18
  5. Step 5: Solve for x
    x = 41,918,202,549.18/220,521.80
  6. Step 6: Final answer
    x = 190,086.43

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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.