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Finding the Fourth Proportional to 307,995.69, 425,029.57 and 172,031.57

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Solution

The fourth proportional to 307,995.69, 425,029.57 and 172,031.57 is: 237,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,995.69 : 425,029.57 = 172,031.57 : x
  2. Step 2: Convert to fraction form
    307,995.69/425,029.57 = 172,031.57/x
  3. Step 3: Cross multiply
    307,995.69x = 425,029.57 × 172,031.57
  4. Step 4: Simplify right side
    307,995.69x = 73,118,503,363.37
  5. Step 5: Solve for x
    x = 73,118,503,363.37/307,995.69
  6. Step 6: Final answer
    x = 237,401.06

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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.