Home / 345,983.20-519,266.40-156,734.80

Finding the Fourth Proportional to 345,983.20, 519,266.40 and 156,734.80

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Solution

The fourth proportional to 345,983.20, 519,266.40 and 156,734.80 is: 235,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,983.20 : 519,266.40 = 156,734.80 : x
  2. Step 2: Convert to fraction form
    345,983.20/519,266.40 = 156,734.80/x
  3. Step 3: Cross multiply
    345,983.20x = 519,266.40 × 156,734.80
  4. Step 4: Simplify right side
    345,983.20x = 81,387,115,350.72
  5. Step 5: Solve for x
    x = 81,387,115,350.72/345,983.20
  6. Step 6: Final answer
    x = 235,234.30

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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.