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Finding the Fourth Proportional to 231,816.82, 319,794.32 and 151,207.78

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Solution

The fourth proportional to 231,816.82, 319,794.32 and 151,207.78 is: 208,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,816.82 : 319,794.32 = 151,207.78 : x
  2. Step 2: Convert to fraction form
    231,816.82/319,794.32 = 151,207.78/x
  3. Step 3: Cross multiply
    231,816.82x = 319,794.32 × 151,207.78
  4. Step 4: Simplify right side
    231,816.82x = 48,355,389,183.81
  5. Step 5: Solve for x
    x = 48,355,389,183.81/231,816.82
  6. Step 6: Final answer
    x = 208,593.10

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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.