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Finding the Fourth Proportional to 338,998.53, 508,442.17 and 125,716.37

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Solution

The fourth proportional to 338,998.53, 508,442.17 and 125,716.37 is: 188,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,998.53 : 508,442.17 = 125,716.37 : x
  2. Step 2: Convert to fraction form
    338,998.53/508,442.17 = 125,716.37/x
  3. Step 3: Cross multiply
    338,998.53x = 508,442.17 × 125,716.37
  4. Step 4: Simplify right side
    338,998.53x = 63,919,503,967.32
  5. Step 5: Solve for x
    x = 63,919,503,967.32/338,998.53
  6. Step 6: Final answer
    x = 188,553.93

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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.