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Finding the Fourth Proportional to 240,782.85, 332,283.75 and 138,806.49

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Solution

The fourth proportional to 240,782.85, 332,283.75 and 138,806.49 is: 191,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,782.85 : 332,283.75 = 138,806.49 : x
  2. Step 2: Convert to fraction form
    240,782.85/332,283.75 = 138,806.49/x
  3. Step 3: Cross multiply
    240,782.85x = 332,283.75 × 138,806.49
  4. Step 4: Simplify right side
    240,782.85x = 46,123,141,021.54
  5. Step 5: Solve for x
    x = 46,123,141,021.54/240,782.85
  6. Step 6: Final answer
    x = 191,554.93

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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.