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Finding the Fourth Proportional to 245,753.82, 339,139.44 and 138,323.79

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Solution

The fourth proportional to 245,753.82, 339,139.44 and 138,323.79 is: 190,886.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,753.82 : 339,139.44 = 138,323.79 : x
  2. Step 2: Convert to fraction form
    245,753.82/339,139.44 = 138,323.79/x
  3. Step 3: Cross multiply
    245,753.82x = 339,139.44 × 138,323.79
  4. Step 4: Simplify right side
    245,753.82x = 46,911,052,679.28
  5. Step 5: Solve for x
    x = 46,911,052,679.28/245,753.82
  6. Step 6: Final answer
    x = 190,886.36

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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.