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Finding the Fourth Proportional to 216,317.82, 324,421.96 and 64,479.86

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Solution

The fourth proportional to 216,317.82, 324,421.96 and 64,479.86 is: 96,703.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,317.82 : 324,421.96 = 64,479.86 : x
  2. Step 2: Convert to fraction form
    216,317.82/324,421.96 = 64,479.86/x
  3. Step 3: Cross multiply
    216,317.82x = 324,421.96 × 64,479.86
  4. Step 4: Simplify right side
    216,317.82x = 20,918,682,561.73
  5. Step 5: Solve for x
    x = 20,918,682,561.73/216,317.82
  6. Step 6: Final answer
    x = 96,703.46

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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.