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Finding the Fourth Proportional to 457,591.35, 631,262.47 and 287,919.03

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Solution

The fourth proportional to 457,591.35, 631,262.47 and 287,919.03 is: 397,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,591.35 : 631,262.47 = 287,919.03 : x
  2. Step 2: Convert to fraction form
    457,591.35/631,262.47 = 287,919.03/x
  3. Step 3: Cross multiply
    457,591.35x = 631,262.47 × 287,919.03
  4. Step 4: Simplify right side
    457,591.35x = 181,752,478,037.80
  5. Step 5: Solve for x
    x = 181,752,478,037.80/457,591.35
  6. Step 6: Final answer
    x = 397,193.87

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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.