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Finding the Fourth Proportional to 217,196.80, 325,852.80 and 76,940.80

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Solution

The fourth proportional to 217,196.80, 325,852.80 and 76,940.80 is: 115,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,196.80 : 325,852.80 = 76,940.80 : x
  2. Step 2: Convert to fraction form
    217,196.80/325,852.80 = 76,940.80/x
  3. Step 3: Cross multiply
    217,196.80x = 325,852.80 × 76,940.80
  4. Step 4: Simplify right side
    217,196.80x = 25,071,375,114.24
  5. Step 5: Solve for x
    x = 25,071,375,114.24/217,196.80
  6. Step 6: Final answer
    x = 115,431.60

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1.5x scale

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.