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Finding the Fourth Proportional to 253,640.52, 380,135.16 and 95,680.80

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Solution

The fourth proportional to 253,640.52, 380,135.16 and 95,680.80 is: 143,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,640.52 : 380,135.16 = 95,680.80 : x
  2. Step 2: Convert to fraction form
    253,640.52/380,135.16 = 95,680.80/x
  3. Step 3: Cross multiply
    253,640.52x = 380,135.16 × 95,680.80
  4. Step 4: Simplify right side
    253,640.52x = 36,371,636,216.93
  5. Step 5: Solve for x
    x = 36,371,636,216.93/253,640.52
  6. Step 6: Final answer
    x = 143,398.37

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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.