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Finding the Fourth Proportional to 231,627, 319,645.26 and 125,643

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Solution

The fourth proportional to 231,627, 319,645.26 and 125,643 is: 173,387.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,627 : 319,645.26 = 125,643 : x
  2. Step 2: Convert to fraction form
    231,627/319,645.26 = 125,643/x
  3. Step 3: Cross multiply
    231,627x = 319,645.26 × 125,643
  4. Step 4: Simplify right side
    231,627x = 40,161,189,402.18
  5. Step 5: Solve for x
    x = 40,161,189,402.18/231,627
  6. Step 6: Final answer
    x = 173,387.34

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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.