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Finding the Fourth Proportional to 245,494.88, 338,755.40 and 138,062.60

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Solution

The fourth proportional to 245,494.88, 338,755.40 and 138,062.60 is: 190,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,494.88 : 338,755.40 = 138,062.60 : x
  2. Step 2: Convert to fraction form
    245,494.88/338,755.40 = 138,062.60/x
  3. Step 3: Cross multiply
    245,494.88x = 338,755.40 × 138,062.60
  4. Step 4: Simplify right side
    245,494.88x = 46,769,451,288.04
  5. Step 5: Solve for x
    x = 46,769,451,288.04/245,494.88
  6. Step 6: Final answer
    x = 190,510.90

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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.