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Finding the Fourth Proportional to 348,219.17, 522,375.22 and 137,807.90

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Solution

The fourth proportional to 348,219.17, 522,375.22 and 137,807.90 is: 206,730.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,219.17 : 522,375.22 = 137,807.90 : x
  2. Step 2: Convert to fraction form
    348,219.17/522,375.22 = 137,807.90/x
  3. Step 3: Cross multiply
    348,219.17x = 522,375.22 × 137,807.90
  4. Step 4: Simplify right side
    348,219.17x = 71,987,429,468.36
  5. Step 5: Solve for x
    x = 71,987,429,468.36/348,219.17
  6. Step 6: Final answer
    x = 206,730.23

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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.