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Finding the Fourth Proportional to 350,643.20, 525,187.20 and 271,500.80

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Solution

The fourth proportional to 350,643.20, 525,187.20 and 271,500.80 is: 406,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,643.20 : 525,187.20 = 271,500.80 : x
  2. Step 2: Convert to fraction form
    350,643.20/525,187.20 = 271,500.80/x
  3. Step 3: Cross multiply
    350,643.20x = 525,187.20 × 271,500.80
  4. Step 4: Simplify right side
    350,643.20x = 142,588,744,949.76
  5. Step 5: Solve for x
    x = 142,588,744,949.76/350,643.20
  6. Step 6: Final answer
    x = 406,649.11

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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.