Home / 217,121.10-325,566.45-76,884.30

Finding the Fourth Proportional to 217,121.10, 325,566.45 and 76,884.30

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Solution

The fourth proportional to 217,121.10, 325,566.45 and 76,884.30 is: 115,285.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,121.10 : 325,566.45 = 76,884.30 : x
  2. Step 2: Convert to fraction form
    217,121.10/325,566.45 = 76,884.30/x
  3. Step 3: Cross multiply
    217,121.10x = 325,566.45 × 76,884.30
  4. Step 4: Simplify right side
    217,121.10x = 25,030,948,611.74
  5. Step 5: Solve for x
    x = 25,030,948,611.74/217,121.10
  6. Step 6: Final answer
    x = 115,285.66

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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.