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Finding the Fourth Proportional to 279,590.38, 385,810.34 and 158,736.76

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Solution

The fourth proportional to 279,590.38, 385,810.34 and 158,736.76 is: 219,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,590.38 : 385,810.34 = 158,736.76 : x
  2. Step 2: Convert to fraction form
    279,590.38/385,810.34 = 158,736.76/x
  3. Step 3: Cross multiply
    279,590.38x = 385,810.34 × 158,736.76
  4. Step 4: Simplify right side
    279,590.38x = 61,242,283,346.10
  5. Step 5: Solve for x
    x = 61,242,283,346.10/279,590.38
  6. Step 6: Final answer
    x = 219,042.88

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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.