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Finding the Fourth Proportional to 217,672.98, 325,664.65 and 190,816.91

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Solution

The fourth proportional to 217,672.98, 325,664.65 and 190,816.91 is: 285,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,672.98 : 325,664.65 = 190,816.91 : x
  2. Step 2: Convert to fraction form
    217,672.98/325,664.65 = 190,816.91/x
  3. Step 3: Cross multiply
    217,672.98x = 325,664.65 × 190,816.91
  4. Step 4: Simplify right side
    217,672.98x = 62,142,322,209.23
  5. Step 5: Solve for x
    x = 62,142,322,209.23/217,672.98
  6. Step 6: Final answer
    x = 285,484.78

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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.