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Finding the Fourth Proportional to 375,713.28, 517,190.40 and 327,890.88

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Solution

The fourth proportional to 375,713.28, 517,190.40 and 327,890.88 is: 451,360.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,713.28 : 517,190.40 = 327,890.88 : x
  2. Step 2: Convert to fraction form
    375,713.28/517,190.40 = 327,890.88/x
  3. Step 3: Cross multiply
    375,713.28x = 517,190.40 × 327,890.88
  4. Step 4: Simplify right side
    375,713.28x = 169,582,015,383.55
  5. Step 5: Solve for x
    x = 169,582,015,383.55/375,713.28
  6. Step 6: Final answer
    x = 451,360.18

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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.