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Finding the Fourth Proportional to 245,883.26, 339,315.66 and 138,463.90

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Solution

The fourth proportional to 245,883.26, 339,315.66 and 138,463.90 is: 191,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,883.26 : 339,315.66 = 138,463.90 : x
  2. Step 2: Convert to fraction form
    245,883.26/339,315.66 = 138,463.90/x
  3. Step 3: Cross multiply
    245,883.26x = 339,315.66 × 138,463.90
  4. Step 4: Simplify right side
    245,883.26x = 46,982,969,614.67
  5. Step 5: Solve for x
    x = 46,982,969,614.67/245,883.26
  6. Step 6: Final answer
    x = 191,078.36

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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.