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Finding the Fourth Proportional to 218,233.56, 301,127.60 and 122,721.80

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Solution

The fourth proportional to 218,233.56, 301,127.60 and 122,721.80 is: 169,336.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,233.56 : 301,127.60 = 122,721.80 : x
  2. Step 2: Convert to fraction form
    218,233.56/301,127.60 = 122,721.80/x
  3. Step 3: Cross multiply
    218,233.56x = 301,127.60 × 122,721.80
  4. Step 4: Simplify right side
    218,233.56x = 36,954,918,982.43
  5. Step 5: Solve for x
    x = 36,954,918,982.43/218,233.56
  6. Step 6: Final answer
    x = 169,336.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.