Home / 205,875.20-308,812.80-203,906.90

Finding the Fourth Proportional to 205,875.20, 308,812.80 and 203,906.90

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Solution

The fourth proportional to 205,875.20, 308,812.80 and 203,906.90 is: 305,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,875.20 : 308,812.80 = 203,906.90 : x
  2. Step 2: Convert to fraction form
    205,875.20/308,812.80 = 203,906.90/x
  3. Step 3: Cross multiply
    205,875.20x = 308,812.80 × 203,906.90
  4. Step 4: Simplify right side
    205,875.20x = 62,969,060,728.32
  5. Step 5: Solve for x
    x = 62,969,060,728.32/205,875.20
  6. Step 6: Final answer
    x = 305,860.35

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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.