Home / 205,728.80-308,593.20-204,416.60

Finding the Fourth Proportional to 205,728.80, 308,593.20 and 204,416.60

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Solution

The fourth proportional to 205,728.80, 308,593.20 and 204,416.60 is: 306,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,728.80 : 308,593.20 = 204,416.60 : x
  2. Step 2: Convert to fraction form
    205,728.80/308,593.20 = 204,416.60/x
  3. Step 3: Cross multiply
    205,728.80x = 308,593.20 × 204,416.60
  4. Step 4: Simplify right side
    205,728.80x = 63,081,572,727.12
  5. Step 5: Solve for x
    x = 63,081,572,727.12/205,728.80
  6. Step 6: Final answer
    x = 306,624.90

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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.