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Finding the Fourth Proportional to 259,348.50, 388,873.31 and 101,490.84

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Solution

The fourth proportional to 259,348.50, 388,873.31 and 101,490.84 is: 152,177.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,348.50 : 388,873.31 = 101,490.84 : x
  2. Step 2: Convert to fraction form
    259,348.50/388,873.31 = 101,490.84/x
  3. Step 3: Cross multiply
    259,348.50x = 388,873.31 × 101,490.84
  4. Step 4: Simplify right side
    259,348.50x = 39,467,078,378.03
  5. Step 5: Solve for x
    x = 39,467,078,378.03/259,348.50
  6. Step 6: Final answer
    x = 152,177.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.