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Finding the Fourth Proportional to 230,091.62, 317,526.21 and 129,491.78

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Solution

The fourth proportional to 230,091.62, 317,526.21 and 129,491.78 is: 178,698.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,091.62 : 317,526.21 = 129,491.78 : x
  2. Step 2: Convert to fraction form
    230,091.62/317,526.21 = 129,491.78/x
  3. Step 3: Cross multiply
    230,091.62x = 317,526.21 × 129,491.78
  4. Step 4: Simplify right side
    230,091.62x = 41,117,034,129.55
  5. Step 5: Solve for x
    x = 41,117,034,129.55/230,091.62
  6. Step 6: Final answer
    x = 178,698.53

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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.