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Finding the Fourth Proportional to 217,062.80, 325,205.40 and 133,859.60

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Solution

The fourth proportional to 217,062.80, 325,205.40 and 133,859.60 is: 200,549.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,062.80 : 325,205.40 = 133,859.60 : x
  2. Step 2: Convert to fraction form
    217,062.80/325,205.40 = 133,859.60/x
  3. Step 3: Cross multiply
    217,062.80x = 325,205.40 × 133,859.60
  4. Step 4: Simplify right side
    217,062.80x = 43,531,864,761.84
  5. Step 5: Solve for x
    x = 43,531,864,761.84/217,062.80
  6. Step 6: Final answer
    x = 200,549.63

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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.