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Finding the Fourth Proportional to 235,635, 325,173.78 and 140,139.60

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Solution

The fourth proportional to 235,635, 325,173.78 and 140,139.60 is: 193,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,635 : 325,173.78 = 140,139.60 : x
  2. Step 2: Convert to fraction form
    235,635/325,173.78 = 140,139.60/x
  3. Step 3: Cross multiply
    235,635x = 325,173.78 × 140,139.60
  4. Step 4: Simplify right side
    235,635x = 45,569,723,459.69
  5. Step 5: Solve for x
    x = 45,569,723,459.69/235,635
  6. Step 6: Final answer
    x = 193,391.15

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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.