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Finding the Fourth Proportional to 348,310.63, 522,512.43 and 137,899.36

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Solution

The fourth proportional to 348,310.63, 522,512.43 and 137,899.36 is: 206,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,310.63 : 522,512.43 = 137,899.36 : x
  2. Step 2: Convert to fraction form
    348,310.63/522,512.43 = 137,899.36/x
  3. Step 3: Cross multiply
    348,310.63x = 522,512.43 × 137,899.36
  4. Step 4: Simplify right side
    348,310.63x = 72,054,129,689.04
  5. Step 5: Solve for x
    x = 72,054,129,689.04/348,310.63
  6. Step 6: Final answer
    x = 206,867.44

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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.