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Finding the Fourth Proportional to 218,093.80, 300,954.52 and 122,615.32

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Solution

The fourth proportional to 218,093.80, 300,954.52 and 122,615.32 is: 169,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,093.80 : 300,954.52 = 122,615.32 : x
  2. Step 2: Convert to fraction form
    218,093.80/300,954.52 = 122,615.32/x
  3. Step 3: Cross multiply
    218,093.80x = 300,954.52 × 122,615.32
  4. Step 4: Simplify right side
    218,093.80x = 36,901,634,775.25
  5. Step 5: Solve for x
    x = 36,901,634,775.25/218,093.80
  6. Step 6: Final answer
    x = 169,200.75

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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.