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Finding the Fourth Proportional to 216,576.69, 324,920.39 and 83,421.19

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Solution

The fourth proportional to 216,576.69, 324,920.39 and 83,421.19 is: 125,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,576.69 : 324,920.39 = 83,421.19 : x
  2. Step 2: Convert to fraction form
    216,576.69/324,920.39 = 83,421.19/x
  3. Step 3: Cross multiply
    216,576.69x = 324,920.39 × 83,421.19
  4. Step 4: Simplify right side
    216,576.69x = 27,105,245,589.06
  5. Step 5: Solve for x
    x = 27,105,245,589.06/216,576.69
  6. Step 6: Final answer
    x = 125,153.11

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1.5x scale

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.