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Finding the Fourth Proportional to 307,998.27, 425,033.12 and 172,034.13

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Solution

The fourth proportional to 307,998.27, 425,033.12 and 172,034.13 is: 237,404.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.27 : 425,033.12 = 172,034.13 : x
  2. Step 2: Convert to fraction form
    307,998.27/425,033.12 = 172,034.13/x
  3. Step 3: Cross multiply
    307,998.27x = 425,033.12 × 172,034.13
  4. Step 4: Simplify right side
    307,998.27x = 73,120,203,020.39
  5. Step 5: Solve for x
    x = 73,120,203,020.39/307,998.27
  6. Step 6: Final answer
    x = 237,404.59

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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.