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Finding the Fourth Proportional to 262,104.72, 393,047.64 and 129,047.76

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Solution

The fourth proportional to 262,104.72, 393,047.64 and 129,047.76 is: 193,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,104.72 : 393,047.64 = 129,047.76 : x
  2. Step 2: Convert to fraction form
    262,104.72/393,047.64 = 129,047.76/x
  3. Step 3: Cross multiply
    262,104.72x = 393,047.64 × 129,047.76
  4. Step 4: Simplify right side
    262,104.72x = 50,721,917,515.29
  5. Step 5: Solve for x
    x = 50,721,917,515.29/262,104.72
  6. Step 6: Final answer
    x = 193,517.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.