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Finding the Fourth Proportional to 281,259.78, 388,004.31 and 173,791.14

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Solution

The fourth proportional to 281,259.78, 388,004.31 and 173,791.14 is: 239,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,259.78 : 388,004.31 = 173,791.14 : x
  2. Step 2: Convert to fraction form
    281,259.78/388,004.31 = 173,791.14/x
  3. Step 3: Cross multiply
    281,259.78x = 388,004.31 × 173,791.14
  4. Step 4: Simplify right side
    281,259.78x = 67,431,711,359.81
  5. Step 5: Solve for x
    x = 67,431,711,359.81/281,259.78
  6. Step 6: Final answer
    x = 239,748.86

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1.5x scale

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.