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Finding the Fourth Proportional to 192,945.36, 289,447.20 and 68,276.64

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Solution

The fourth proportional to 192,945.36, 289,447.20 and 68,276.64 is: 102,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,945.36 : 289,447.20 = 68,276.64 : x
  2. Step 2: Convert to fraction form
    192,945.36/289,447.20 = 68,276.64/x
  3. Step 3: Cross multiply
    192,945.36x = 289,447.20 × 68,276.64
  4. Step 4: Simplify right side
    192,945.36x = 19,762,482,273.41
  5. Step 5: Solve for x
    x = 19,762,482,273.41/192,945.36
  6. Step 6: Final answer
    x = 102,425.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.