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Finding the Fourth Proportional to 345,986, 519,211.92 and 121,348.52

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Solution

The fourth proportional to 345,986, 519,211.92 and 121,348.52 is: 182,104.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,986 : 519,211.92 = 121,348.52 : x
  2. Step 2: Convert to fraction form
    345,986/519,211.92 = 121,348.52/x
  3. Step 3: Cross multiply
    345,986x = 519,211.92 × 121,348.52
  4. Step 4: Simplify right side
    345,986x = 63,005,598,058.36
  5. Step 5: Solve for x
    x = 63,005,598,058.36/345,986
  6. Step 6: Final answer
    x = 182,104.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.