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Finding the Fourth Proportional to 375,640.43, 518,382.56 and 203,559.06

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Solution

The fourth proportional to 375,640.43, 518,382.56 and 203,559.06 is: 280,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,640.43 : 518,382.56 = 203,559.06 : x
  2. Step 2: Convert to fraction form
    375,640.43/518,382.56 = 203,559.06/x
  3. Step 3: Cross multiply
    375,640.43x = 518,382.56 × 203,559.06
  4. Step 4: Simplify right side
    375,640.43x = 105,521,465,616.20
  5. Step 5: Solve for x
    x = 105,521,465,616.20/375,640.43
  6. Step 6: Final answer
    x = 280,910.84

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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.