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Finding the Fourth Proportional to 216,296.78, 324,390.50 and 64,458.84

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Solution

The fourth proportional to 216,296.78, 324,390.50 and 64,458.84 is: 96,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,296.78 : 324,390.50 = 64,458.84 : x
  2. Step 2: Convert to fraction form
    216,296.78/324,390.50 = 64,458.84/x
  3. Step 3: Cross multiply
    216,296.78x = 324,390.50 × 64,458.84
  4. Step 4: Simplify right side
    216,296.78x = 20,909,834,466.92
  5. Step 5: Solve for x
    x = 20,909,834,466.92/216,296.78
  6. Step 6: Final answer
    x = 96,671.96

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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.