Home / 216,979.20-325,231.20-76,665.60

Finding the Fourth Proportional to 216,979.20, 325,231.20 and 76,665.60

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Solution

The fourth proportional to 216,979.20, 325,231.20 and 76,665.60 is: 114,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,979.20 : 325,231.20 = 76,665.60 : x
  2. Step 2: Convert to fraction form
    216,979.20/325,231.20 = 76,665.60/x
  3. Step 3: Cross multiply
    216,979.20x = 325,231.20 × 76,665.60
  4. Step 4: Simplify right side
    216,979.20x = 24,934,045,086.72
  5. Step 5: Solve for x
    x = 24,934,045,086.72/216,979.20
  6. Step 6: Final answer
    x = 114,914.45

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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.