Home / 356,724.78-492,280.20-205,821.78

Finding the Fourth Proportional to 356,724.78, 492,280.20 and 205,821.78

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Solution

The fourth proportional to 356,724.78, 492,280.20 and 205,821.78 is: 284,034.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,724.78 : 492,280.20 = 205,821.78 : x
  2. Step 2: Convert to fraction form
    356,724.78/492,280.20 = 205,821.78/x
  3. Step 3: Cross multiply
    356,724.78x = 492,280.20 × 205,821.78
  4. Step 4: Simplify right side
    356,724.78x = 101,321,987,022.76
  5. Step 5: Solve for x
    x = 101,321,987,022.76/356,724.78
  6. Step 6: Final answer
    x = 284,034.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.