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Finding the Fourth Proportional to 375,789.63, 518,588.49 and 203,708.28

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Solution

The fourth proportional to 375,789.63, 518,588.49 and 203,708.28 is: 281,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,789.63 : 518,588.49 = 203,708.28 : x
  2. Step 2: Convert to fraction form
    375,789.63/518,588.49 = 203,708.28/x
  3. Step 3: Cross multiply
    375,789.63x = 518,588.49 × 203,708.28
  4. Step 4: Simplify right side
    375,789.63x = 105,640,769,325.70
  5. Step 5: Solve for x
    x = 105,640,769,325.70/375,789.63
  6. Step 6: Final answer
    x = 281,116.78

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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.