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Finding the Fourth Proportional to 245,481.52, 338,761.26 and 138,051.52

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Solution

The fourth proportional to 245,481.52, 338,761.26 and 138,051.52 is: 190,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,481.52 : 338,761.26 = 138,051.52 : x
  2. Step 2: Convert to fraction form
    245,481.52/338,761.26 = 138,051.52/x
  3. Step 3: Cross multiply
    245,481.52x = 338,761.26 × 138,051.52
  4. Step 4: Simplify right side
    245,481.52x = 46,766,506,860.12
  5. Step 5: Solve for x
    x = 46,766,506,860.12/245,481.52
  6. Step 6: Final answer
    x = 190,509.28

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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.