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Finding the Fourth Proportional to 253,904.49, 380,295.17 and 103,689.26

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Solution

The fourth proportional to 253,904.49, 380,295.17 and 103,689.26 is: 155,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,904.49 : 380,295.17 = 103,689.26 : x
  2. Step 2: Convert to fraction form
    253,904.49/380,295.17 = 103,689.26/x
  3. Step 3: Cross multiply
    253,904.49x = 380,295.17 × 103,689.26
  4. Step 4: Simplify right side
    253,904.49x = 39,432,524,758.87
  5. Step 5: Solve for x
    x = 39,432,524,758.87/253,904.49
  6. Step 6: Final answer
    x = 155,304.56

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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.