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Finding the Fourth Proportional to 339,858.93, 509,755.28 and 103,203.66

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Solution

The fourth proportional to 339,858.93, 509,755.28 and 103,203.66 is: 154,795.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,858.93 : 509,755.28 = 103,203.66 : x
  2. Step 2: Convert to fraction form
    339,858.93/509,755.28 = 103,203.66/x
  3. Step 3: Cross multiply
    339,858.93x = 509,755.28 × 103,203.66
  4. Step 4: Simplify right side
    339,858.93x = 52,608,610,858.33
  5. Step 5: Solve for x
    x = 52,608,610,858.33/339,858.93
  6. Step 6: Final answer
    x = 154,795.43

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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.