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Finding the Fourth Proportional to 230,220.03, 317,713.22 and 128,245.47

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Solution

The fourth proportional to 230,220.03, 317,713.22 and 128,245.47 is: 176,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,220.03 : 317,713.22 = 128,245.47 : x
  2. Step 2: Convert to fraction form
    230,220.03/317,713.22 = 128,245.47/x
  3. Step 3: Cross multiply
    230,220.03x = 317,713.22 × 128,245.47
  4. Step 4: Simplify right side
    230,220.03x = 40,745,279,872.38
  5. Step 5: Solve for x
    x = 40,745,279,872.38/230,220.03
  6. Step 6: Final answer
    x = 176,984.08

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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.