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Finding the Fourth Proportional to 235,452.42, 324,791.37 and 139,989.87

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Solution

The fourth proportional to 235,452.42, 324,791.37 and 139,989.87 is: 193,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,452.42 : 324,791.37 = 139,989.87 : x
  2. Step 2: Convert to fraction form
    235,452.42/324,791.37 = 139,989.87/x
  3. Step 3: Cross multiply
    235,452.42x = 324,791.37 × 139,989.87
  4. Step 4: Simplify right side
    235,452.42x = 45,467,501,663.42
  5. Step 5: Solve for x
    x = 45,467,501,663.42/235,452.42
  6. Step 6: Final answer
    x = 193,106.96

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1.5x scale

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.