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Finding the Fourth Proportional to 230,377.66, 317,882.63 and 128,380.76

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Solution

The fourth proportional to 230,377.66, 317,882.63 and 128,380.76 is: 177,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,377.66 : 317,882.63 = 128,380.76 : x
  2. Step 2: Convert to fraction form
    230,377.66/317,882.63 = 128,380.76/x
  3. Step 3: Cross multiply
    230,377.66x = 317,882.63 × 128,380.76
  4. Step 4: Simplify right side
    230,377.66x = 40,810,013,783.00
  5. Step 5: Solve for x
    x = 40,810,013,783.00/230,377.66
  6. Step 6: Final answer
    x = 177,143.97

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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.