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Finding the Fourth Proportional to 218,888.49, 328,027.77 and 122,739.47

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Solution

The fourth proportional to 218,888.49, 328,027.77 and 122,739.47 is: 183,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.49 : 328,027.77 = 122,739.47 : x
  2. Step 2: Convert to fraction form
    218,888.49/328,027.77 = 122,739.47/x
  3. Step 3: Cross multiply
    218,888.49x = 328,027.77 × 122,739.47
  4. Step 4: Simplify right side
    218,888.49x = 40,261,954,635.08
  5. Step 5: Solve for x
    x = 40,261,954,635.08/218,888.49
  6. Step 6: Final answer
    x = 183,938.20

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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.