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Finding the Fourth Proportional to 279,770.62, 386,071.38 and 158,911.53

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Solution

The fourth proportional to 279,770.62, 386,071.38 and 158,911.53 is: 219,291.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,770.62 : 386,071.38 = 158,911.53 : x
  2. Step 2: Convert to fraction form
    279,770.62/386,071.38 = 158,911.53/x
  3. Step 3: Cross multiply
    279,770.62x = 386,071.38 × 158,911.53
  4. Step 4: Simplify right side
    279,770.62x = 61,351,193,685.01
  5. Step 5: Solve for x
    x = 61,351,193,685.01/279,770.62
  6. Step 6: Final answer
    x = 219,291.06

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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.