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Finding the Fourth Proportional to 362,612.80, 543,837.21 and 137,893.15

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Solution

The fourth proportional to 362,612.80, 543,837.21 and 137,893.15 is: 206,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,612.80 : 543,837.21 = 137,893.15 : x
  2. Step 2: Convert to fraction form
    362,612.80/543,837.21 = 137,893.15/x
  3. Step 3: Cross multiply
    362,612.80x = 543,837.21 × 137,893.15
  4. Step 4: Simplify right side
    362,612.80x = 74,991,425,974.11
  5. Step 5: Solve for x
    x = 74,991,425,974.11/362,612.80
  6. Step 6: Final answer
    x = 206,808.55

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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.