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Finding the Fourth Proportional to 350,863.20, 525,517.20 and 271,720.80

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Solution

The fourth proportional to 350,863.20, 525,517.20 and 271,720.80 is: 406,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,863.20 : 525,517.20 = 271,720.80 : x
  2. Step 2: Convert to fraction form
    350,863.20/525,517.20 = 271,720.80/x
  3. Step 3: Cross multiply
    350,863.20x = 525,517.20 × 271,720.80
  4. Step 4: Simplify right side
    350,863.20x = 142,793,953,997.76
  5. Step 5: Solve for x
    x = 142,793,953,997.76/350,863.20
  6. Step 6: Final answer
    x = 406,979.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.