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Finding the Fourth Proportional to 478,591.20, 660,454.49 and 263,731.21

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Solution

The fourth proportional to 478,591.20, 660,454.49 and 263,731.21 is: 363,948.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,591.20 : 660,454.49 = 263,731.21 : x
  2. Step 2: Convert to fraction form
    478,591.20/660,454.49 = 263,731.21/x
  3. Step 3: Cross multiply
    478,591.20x = 660,454.49 × 263,731.21
  4. Step 4: Simplify right side
    478,591.20x = 174,182,460,805.83
  5. Step 5: Solve for x
    x = 174,182,460,805.83/478,591.20
  6. Step 6: Final answer
    x = 363,948.31

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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.