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Finding the Fourth Proportional to 457,420.40, 631,240.44 and 250,687.88

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Solution

The fourth proportional to 457,420.40, 631,240.44 and 250,687.88 is: 345,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,420.40 : 631,240.44 = 250,687.88 : x
  2. Step 2: Convert to fraction form
    457,420.40/631,240.44 = 250,687.88/x
  3. Step 3: Cross multiply
    457,420.40x = 631,240.44 × 250,687.88
  4. Step 4: Simplify right side
    457,420.40x = 158,244,327,673.87
  5. Step 5: Solve for x
    x = 158,244,327,673.87/457,420.40
  6. Step 6: Final answer
    x = 345,949.43

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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.