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Finding the Fourth Proportional to 217,490.44, 300,728.82 and 189,496.84

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Solution

The fourth proportional to 217,490.44, 300,728.82 and 189,496.84 is: 262,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,490.44 : 300,728.82 = 189,496.84 : x
  2. Step 2: Convert to fraction form
    217,490.44/300,728.82 = 189,496.84/x
  3. Step 3: Cross multiply
    217,490.44x = 300,728.82 × 189,496.84
  4. Step 4: Simplify right side
    217,490.44x = 56,987,161,086.93
  5. Step 5: Solve for x
    x = 56,987,161,086.93/217,490.44
  6. Step 6: Final answer
    x = 262,021.45

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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.