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Finding the Fourth Proportional to 258,077.71, 356,003.78 and 239,811.02

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Solution

The fourth proportional to 258,077.71, 356,003.78 and 239,811.02 is: 330,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,077.71 : 356,003.78 = 239,811.02 : x
  2. Step 2: Convert to fraction form
    258,077.71/356,003.78 = 239,811.02/x
  3. Step 3: Cross multiply
    258,077.71x = 356,003.78 × 239,811.02
  4. Step 4: Simplify right side
    258,077.71x = 85,373,629,605.66
  5. Step 5: Solve for x
    x = 85,373,629,605.66/258,077.71
  6. Step 6: Final answer
    x = 330,805.90

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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.