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Finding the Fourth Proportional to 375,391.20, 518,042.34 and 203,309.34

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Solution

The fourth proportional to 375,391.20, 518,042.34 and 203,309.34 is: 280,568.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,391.20 : 518,042.34 = 203,309.34 : x
  2. Step 2: Convert to fraction form
    375,391.20/518,042.34 = 203,309.34/x
  3. Step 3: Cross multiply
    375,391.20x = 518,042.34 × 203,309.34
  4. Step 4: Simplify right side
    375,391.20x = 105,322,846,237.46
  5. Step 5: Solve for x
    x = 105,322,846,237.46/375,391.20
  6. Step 6: Final answer
    x = 280,568.23

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1.5x scale

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.