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Finding the Fourth Proportional to 230,234.99, 317,729.89 and 128,262.13

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Solution

The fourth proportional to 230,234.99, 317,729.89 and 128,262.13 is: 177,004.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,234.99 : 317,729.89 = 128,262.13 : x
  2. Step 2: Convert to fraction form
    230,234.99/317,729.89 = 128,262.13/x
  3. Step 3: Cross multiply
    230,234.99x = 317,729.89 × 128,262.13
  4. Step 4: Simplify right side
    230,234.99x = 40,752,713,609.30
  5. Step 5: Solve for x
    x = 40,752,713,609.30/230,234.99
  6. Step 6: Final answer
    x = 177,004.87

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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.