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Finding the Fourth Proportional to 235,486.78, 324,857.48 and 139,925.82

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Solution

The fourth proportional to 235,486.78, 324,857.48 and 139,925.82 is: 193,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,486.78 : 324,857.48 = 139,925.82 : x
  2. Step 2: Convert to fraction form
    235,486.78/324,857.48 = 139,925.82/x
  3. Step 3: Cross multiply
    235,486.78x = 324,857.48 × 139,925.82
  4. Step 4: Simplify right side
    235,486.78x = 45,455,949,272.13
  5. Step 5: Solve for x
    x = 45,455,949,272.13/235,486.78
  6. Step 6: Final answer
    x = 193,029.73

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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.