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Finding the Fourth Proportional to 220,142.40, 330,559.20 and 126,830.40

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Solution

The fourth proportional to 220,142.40, 330,559.20 and 126,830.40 is: 190,444.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,142.40 : 330,559.20 = 126,830.40 : x
  2. Step 2: Convert to fraction form
    220,142.40/330,559.20 = 126,830.40/x
  3. Step 3: Cross multiply
    220,142.40x = 330,559.20 × 126,830.40
  4. Step 4: Simplify right side
    220,142.40x = 41,924,955,559.68
  5. Step 5: Solve for x
    x = 41,924,955,559.68/220,142.40
  6. Step 6: Final answer
    x = 190,444.71

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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.