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Finding the Fourth Proportional to 307,013.80, 423,650.10 and 171,033.88

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Solution

The fourth proportional to 307,013.80, 423,650.10 and 171,033.88 is: 236,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,013.80 : 423,650.10 = 171,033.88 : x
  2. Step 2: Convert to fraction form
    307,013.80/423,650.10 = 171,033.88/x
  3. Step 3: Cross multiply
    307,013.80x = 423,650.10 × 171,033.88
  4. Step 4: Simplify right side
    307,013.80x = 72,458,520,365.39
  5. Step 5: Solve for x
    x = 72,458,520,365.39/307,013.80
  6. Step 6: Final answer
    x = 236,010.63

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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.