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Finding the Fourth Proportional to 275,615.68, 380,344.80 and 154,757.92

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Solution

The fourth proportional to 275,615.68, 380,344.80 and 154,757.92 is: 213,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,615.68 : 380,344.80 = 154,757.92 : x
  2. Step 2: Convert to fraction form
    275,615.68/380,344.80 = 154,757.92/x
  3. Step 3: Cross multiply
    275,615.68x = 380,344.80 × 154,757.92
  4. Step 4: Simplify right side
    275,615.68x = 58,861,370,130.82
  5. Step 5: Solve for x
    x = 58,861,370,130.82/275,615.68
  6. Step 6: Final answer
    x = 213,563.21

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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.