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Finding the Fourth Proportional to 235,506.26, 324,884.40 and 139,945.28

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Solution

The fourth proportional to 235,506.26, 324,884.40 and 139,945.28 is: 193,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,506.26 : 324,884.40 = 139,945.28 : x
  2. Step 2: Convert to fraction form
    235,506.26/324,884.40 = 139,945.28/x
  3. Step 3: Cross multiply
    235,506.26x = 324,884.40 × 139,945.28
  4. Step 4: Simplify right side
    235,506.26x = 45,466,038,325.63
  5. Step 5: Solve for x
    x = 45,466,038,325.63/235,506.26
  6. Step 6: Final answer
    x = 193,056.60

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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.