Home / 216,945.20-325,417.80-76,685.60

Finding the Fourth Proportional to 216,945.20, 325,417.80 and 76,685.60

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Solution

The fourth proportional to 216,945.20, 325,417.80 and 76,685.60 is: 115,028.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,945.20 : 325,417.80 = 76,685.60 : x
  2. Step 2: Convert to fraction form
    216,945.20/325,417.80 = 76,685.60/x
  3. Step 3: Cross multiply
    216,945.20x = 325,417.80 × 76,685.60
  4. Step 4: Simplify right side
    216,945.20x = 24,954,859,243.68
  5. Step 5: Solve for x
    x = 24,954,859,243.68/216,945.20
  6. Step 6: Final answer
    x = 115,028.40

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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.