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Finding the Fourth Proportional to 235,488.78, 324,860.24 and 139,927.82

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Solution

The fourth proportional to 235,488.78, 324,860.24 and 139,927.82 is: 193,032.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,488.78 : 324,860.24 = 139,927.82 : x
  2. Step 2: Convert to fraction form
    235,488.78/324,860.24 = 139,927.82/x
  3. Step 3: Cross multiply
    235,488.78x = 324,860.24 × 139,927.82
  4. Step 4: Simplify right side
    235,488.78x = 45,456,985,187.88
  5. Step 5: Solve for x
    x = 45,456,985,187.88/235,488.78
  6. Step 6: Final answer
    x = 193,032.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.