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Finding the Fourth Proportional to 658,945.68, 988,043.88 and 259,369.80

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Solution

The fourth proportional to 658,945.68, 988,043.88 and 259,369.80 is: 388,907.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,945.68 : 988,043.88 = 259,369.80 : x
  2. Step 2: Convert to fraction form
    658,945.68/988,043.88 = 259,369.80/x
  3. Step 3: Cross multiply
    658,945.68x = 988,043.88 × 259,369.80
  4. Step 4: Simplify right side
    658,945.68x = 256,268,743,546.82
  5. Step 5: Solve for x
    x = 256,268,743,546.82/658,945.68
  6. Step 6: Final answer
    x = 388,907.24

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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.