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Finding the Fourth Proportional to 231,716.71, 319,604.16 and 212,658.04

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Solution

The fourth proportional to 231,716.71, 319,604.16 and 212,658.04 is: 293,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,716.71 : 319,604.16 = 212,658.04 : x
  2. Step 2: Convert to fraction form
    231,716.71/319,604.16 = 212,658.04/x
  3. Step 3: Cross multiply
    231,716.71x = 319,604.16 × 212,658.04
  4. Step 4: Simplify right side
    231,716.71x = 67,966,394,241.45
  5. Step 5: Solve for x
    x = 67,966,394,241.45/231,716.71
  6. Step 6: Final answer
    x = 293,316.76

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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.