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Finding the Fourth Proportional to 279,858.26, 386,204.54 and 158,999.76

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Solution

The fourth proportional to 279,858.26, 386,204.54 and 158,999.76 is: 219,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,858.26 : 386,204.54 = 158,999.76 : x
  2. Step 2: Convert to fraction form
    279,858.26/386,204.54 = 158,999.76/x
  3. Step 3: Cross multiply
    279,858.26x = 386,204.54 × 158,999.76
  4. Step 4: Simplify right side
    279,858.26x = 61,406,428,375.91
  5. Step 5: Solve for x
    x = 61,406,428,375.91/279,858.26
  6. Step 6: Final answer
    x = 219,419.75

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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.