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Finding the Fourth Proportional to 216,651.79, 324,893.71 and 74,470.33

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Solution

The fourth proportional to 216,651.79, 324,893.71 and 74,470.33 is: 111,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,651.79 : 324,893.71 = 74,470.33 : x
  2. Step 2: Convert to fraction form
    216,651.79/324,893.71 = 74,470.33/x
  3. Step 3: Cross multiply
    216,651.79x = 324,893.71 × 74,470.33
  4. Step 4: Simplify right side
    216,651.79x = 24,194,941,798.62
  5. Step 5: Solve for x
    x = 24,194,941,798.62/216,651.79
  6. Step 6: Final answer
    x = 111,676.63

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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.