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Finding the Fourth Proportional to 220,685.38, 330,610.26 and 130,457.97

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Solution

The fourth proportional to 220,685.38, 330,610.26 and 130,457.97 is: 195,439.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,685.38 : 330,610.26 = 130,457.97 : x
  2. Step 2: Convert to fraction form
    220,685.38/330,610.26 = 130,457.97/x
  3. Step 3: Cross multiply
    220,685.38x = 330,610.26 × 130,457.97
  4. Step 4: Simplify right side
    220,685.38x = 43,130,741,727.72
  5. Step 5: Solve for x
    x = 43,130,741,727.72/220,685.38
  6. Step 6: Final answer
    x = 195,439.96

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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.