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Finding the Fourth Proportional to 248,498.80, 342,932.25 and 135,321.46

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Solution

The fourth proportional to 248,498.80, 342,932.25 and 135,321.46 is: 186,745.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,498.80 : 342,932.25 = 135,321.46 : x
  2. Step 2: Convert to fraction form
    248,498.80/342,932.25 = 135,321.46/x
  3. Step 3: Cross multiply
    248,498.80x = 342,932.25 × 135,321.46
  4. Step 4: Simplify right side
    248,498.80x = 46,406,092,751.09
  5. Step 5: Solve for x
    x = 46,406,092,751.09/248,498.80
  6. Step 6: Final answer
    x = 186,745.74

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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.