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Finding the Fourth Proportional to 478,550.26, 660,394 and 271,817.20

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Solution

The fourth proportional to 478,550.26, 660,394 and 271,817.20 is: 375,104.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,550.26 : 660,394 = 271,817.20 : x
  2. Step 2: Convert to fraction form
    478,550.26/660,394 = 271,817.20/x
  3. Step 3: Cross multiply
    478,550.26x = 660,394 × 271,817.20
  4. Step 4: Simplify right side
    478,550.26x = 179,506,447,976.80
  5. Step 5: Solve for x
    x = 179,506,447,976.80/478,550.26
  6. Step 6: Final answer
    x = 375,104.69

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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.