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Finding the Fourth Proportional to 235,208.80, 324,615.97 and 139,715.88

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Solution

The fourth proportional to 235,208.80, 324,615.97 and 139,715.88 is: 192,824.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,208.80 : 324,615.97 = 139,715.88 : x
  2. Step 2: Convert to fraction form
    235,208.80/324,615.97 = 139,715.88/x
  3. Step 3: Cross multiply
    235,208.80x = 324,615.97 × 139,715.88
  4. Step 4: Simplify right side
    235,208.80x = 45,354,005,910.60
  5. Step 5: Solve for x
    x = 45,354,005,910.60/235,208.80
  6. Step 6: Final answer
    x = 192,824.44

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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.