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Finding the Fourth Proportional to 230,040.38, 317,453.10 and 128,063

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Solution

The fourth proportional to 230,040.38, 317,453.10 and 128,063 is: 176,725.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,040.38 : 317,453.10 = 128,063 : x
  2. Step 2: Convert to fraction form
    230,040.38/317,453.10 = 128,063/x
  3. Step 3: Cross multiply
    230,040.38x = 317,453.10 × 128,063
  4. Step 4: Simplify right side
    230,040.38x = 40,653,996,345.30
  5. Step 5: Solve for x
    x = 40,653,996,345.30/230,040.38
  6. Step 6: Final answer
    x = 176,725.48

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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.