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Finding the Fourth Proportional to 192,690.48, 288,661.65 and 141,997.48

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Solution

The fourth proportional to 192,690.48, 288,661.65 and 141,997.48 is: 212,720.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,690.48 : 288,661.65 = 141,997.48 : x
  2. Step 2: Convert to fraction form
    192,690.48/288,661.65 = 141,997.48/x
  3. Step 3: Cross multiply
    192,690.48x = 288,661.65 × 141,997.48
  4. Step 4: Simplify right side
    192,690.48x = 40,989,226,872.64
  5. Step 5: Solve for x
    x = 40,989,226,872.64/192,690.48
  6. Step 6: Final answer
    x = 212,720.56

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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.