Home / 218,861.59-302,052.24-128,293.66

Finding the Fourth Proportional to 218,861.59, 302,052.24 and 128,293.66

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Solution

The fourth proportional to 218,861.59, 302,052.24 and 128,293.66 is: 177,058.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,861.59 : 302,052.24 = 128,293.66 : x
  2. Step 2: Convert to fraction form
    218,861.59/302,052.24 = 128,293.66/x
  3. Step 3: Cross multiply
    218,861.59x = 302,052.24 × 128,293.66
  4. Step 4: Simplify right side
    218,861.59x = 38,751,387,380.80
  5. Step 5: Solve for x
    x = 38,751,387,380.80/218,861.59
  6. Step 6: Final answer
    x = 177,058.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.