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Finding the Fourth Proportional to 245,480.52, 338,759.88 and 138,050.52

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Solution

The fourth proportional to 245,480.52, 338,759.88 and 138,050.52 is: 190,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,480.52 : 338,759.88 = 138,050.52 : x
  2. Step 2: Convert to fraction form
    245,480.52/338,759.88 = 138,050.52/x
  3. Step 3: Cross multiply
    245,480.52x = 338,759.88 × 138,050.52
  4. Step 4: Simplify right side
    245,480.52x = 46,765,977,589.14
  5. Step 5: Solve for x
    x = 46,765,977,589.14/245,480.52
  6. Step 6: Final answer
    x = 190,507.90

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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.