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Finding the Fourth Proportional to 307,995.57, 425,029.41 and 172,031.49

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Solution

The fourth proportional to 307,995.57, 425,029.41 and 172,031.49 is: 237,400.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,995.57 : 425,029.41 = 172,031.49 : x
  2. Step 2: Convert to fraction form
    307,995.57/425,029.41 = 172,031.49/x
  3. Step 3: Cross multiply
    307,995.57x = 425,029.41 × 172,031.49
  4. Step 4: Simplify right side
    307,995.57x = 73,118,442,696.12
  5. Step 5: Solve for x
    x = 73,118,442,696.12/307,995.57
  6. Step 6: Final answer
    x = 237,400.96

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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.