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Finding the Fourth Proportional to 253,908.49, 380,301.17 and 103,693.26

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Solution

The fourth proportional to 253,908.49, 380,301.17 and 103,693.26 is: 155,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,908.49 : 380,301.17 = 103,693.26 : x
  2. Step 2: Convert to fraction form
    253,908.49/380,301.17 = 103,693.26/x
  3. Step 3: Cross multiply
    253,908.49x = 380,301.17 × 103,693.26
  4. Step 4: Simplify right side
    253,908.49x = 39,434,668,099.11
  5. Step 5: Solve for x
    x = 39,434,668,099.11/253,908.49
  6. Step 6: Final answer
    x = 155,310.55

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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.