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Finding the Fourth Proportional to 211,221.71, 316,833.22 and 53,450.11

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Solution

The fourth proportional to 211,221.71, 316,833.22 and 53,450.11 is: 80,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,221.71 : 316,833.22 = 53,450.11 : x
  2. Step 2: Convert to fraction form
    211,221.71/316,833.22 = 53,450.11/x
  3. Step 3: Cross multiply
    211,221.71x = 316,833.22 × 53,450.11
  4. Step 4: Simplify right side
    211,221.71x = 16,934,770,923.51
  5. Step 5: Solve for x
    x = 16,934,770,923.51/211,221.71
  6. Step 6: Final answer
    x = 80,175.33

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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.