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Finding the Fourth Proportional to 279,841.39, 386,191.55 and 159,003.14

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Solution

The fourth proportional to 279,841.39, 386,191.55 and 159,003.14 is: 219,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,841.39 : 386,191.55 = 159,003.14 : x
  2. Step 2: Convert to fraction form
    279,841.39/386,191.55 = 159,003.14/x
  3. Step 3: Cross multiply
    279,841.39x = 386,191.55 × 159,003.14
  4. Step 4: Simplify right side
    279,841.39x = 61,405,669,091.47
  5. Step 5: Solve for x
    x = 61,405,669,091.47/279,841.39
  6. Step 6: Final answer
    x = 219,430.26

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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.