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Finding the Fourth Proportional to 348,040.80, 522,061.20 and 343,375.20

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Solution

The fourth proportional to 348,040.80, 522,061.20 and 343,375.20 is: 515,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,040.80 : 522,061.20 = 343,375.20 : x
  2. Step 2: Convert to fraction form
    348,040.80/522,061.20 = 343,375.20/x
  3. Step 3: Cross multiply
    348,040.80x = 522,061.20 × 343,375.20
  4. Step 4: Simplify right side
    348,040.80x = 179,262,868,962.24
  5. Step 5: Solve for x
    x = 179,262,868,962.24/348,040.80
  6. Step 6: Final answer
    x = 515,062.80

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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.