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Finding the Fourth Proportional to 216,597.80, 324,815.81 and 74,402.71

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Solution

The fourth proportional to 216,597.80, 324,815.81 and 74,402.71 is: 111,576.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,597.80 : 324,815.81 = 74,402.71 : x
  2. Step 2: Convert to fraction form
    216,597.80/324,815.81 = 74,402.71/x
  3. Step 3: Cross multiply
    216,597.80x = 324,815.81 × 74,402.71
  4. Step 4: Simplify right side
    216,597.80x = 24,167,175,330.79
  5. Step 5: Solve for x
    x = 24,167,175,330.79/216,597.80
  6. Step 6: Final answer
    x = 111,576.27

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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.