Home / 442,616.80-664,141.20-205,837.60

Finding the Fourth Proportional to 442,616.80, 664,141.20 and 205,837.60

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Solution

The fourth proportional to 442,616.80, 664,141.20 and 205,837.60 is: 308,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,616.80 : 664,141.20 = 205,837.60 : x
  2. Step 2: Convert to fraction form
    442,616.80/664,141.20 = 205,837.60/x
  3. Step 3: Cross multiply
    442,616.80x = 664,141.20 × 205,837.60
  4. Step 4: Simplify right side
    442,616.80x = 136,705,230,669.12
  5. Step 5: Solve for x
    x = 136,705,230,669.12/442,616.80
  6. Step 6: Final answer
    x = 308,856.85

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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.