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Finding the Fourth Proportional to 279,265.44, 385,387.92 and 151,941.90

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Solution

The fourth proportional to 279,265.44, 385,387.92 and 151,941.90 is: 209,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,265.44 : 385,387.92 = 151,941.90 : x
  2. Step 2: Convert to fraction form
    279,265.44/385,387.92 = 151,941.90/x
  3. Step 3: Cross multiply
    279,265.44x = 385,387.92 × 151,941.90
  4. Step 4: Simplify right side
    279,265.44x = 58,556,572,801.85
  5. Step 5: Solve for x
    x = 58,556,572,801.85/279,265.44
  6. Step 6: Final answer
    x = 209,680.70

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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.