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Finding the Fourth Proportional to 307,998.88, 425,033.96 and 172,034.76

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Solution

The fourth proportional to 307,998.88, 425,033.96 and 172,034.76 is: 237,405.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,998.88 : 425,033.96 = 172,034.76 : x
  2. Step 2: Convert to fraction form
    307,998.88/425,033.96 = 172,034.76/x
  3. Step 3: Cross multiply
    307,998.88x = 425,033.96 × 172,034.76
  4. Step 4: Simplify right side
    307,998.88x = 73,120,615,300.45
  5. Step 5: Solve for x
    x = 73,120,615,300.45/307,998.88
  6. Step 6: Final answer
    x = 237,405.46

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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.