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Finding the Fourth Proportional to 499,640.40, 749,091.24 and 259,409.39

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Solution

The fourth proportional to 499,640.40, 749,091.24 and 259,409.39 is: 388,922.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,640.40 : 749,091.24 = 259,409.39 : x
  2. Step 2: Convert to fraction form
    499,640.40/749,091.24 = 259,409.39/x
  3. Step 3: Cross multiply
    499,640.40x = 749,091.24 × 259,409.39
  4. Step 4: Simplify right side
    499,640.40x = 194,321,297,877.29
  5. Step 5: Solve for x
    x = 194,321,297,877.29/499,640.40
  6. Step 6: Final answer
    x = 388,922.31

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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.