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Finding the Fourth Proportional to 240,581.88, 332,018.39 and 138,605.45

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Solution

The fourth proportional to 240,581.88, 332,018.39 and 138,605.45 is: 191,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,581.88 : 332,018.39 = 138,605.45 : x
  2. Step 2: Convert to fraction form
    240,581.88/332,018.39 = 138,605.45/x
  3. Step 3: Cross multiply
    240,581.88x = 332,018.39 × 138,605.45
  4. Step 4: Simplify right side
    240,581.88x = 46,019,557,040.65
  5. Step 5: Solve for x
    x = 46,019,557,040.65/240,581.88
  6. Step 6: Final answer
    x = 191,284.39

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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.