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Finding the Fourth Proportional to 307,998.56, 425,033.50 and 172,034.48

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Solution

The fourth proportional to 307,998.56, 425,033.50 and 172,034.48 is: 237,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.56 : 425,033.50 = 172,034.48 : x
  2. Step 2: Convert to fraction form
    307,998.56/425,033.50 = 172,034.48/x
  3. Step 3: Cross multiply
    307,998.56x = 425,033.50 × 172,034.48
  4. Step 4: Simplify right side
    307,998.56x = 73,120,415,029.91
  5. Step 5: Solve for x
    x = 73,120,415,029.91/307,998.56
  6. Step 6: Final answer
    x = 237,405.05

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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.