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Finding the Fourth Proportional to 216,569.54, 324,900.68 and 64,778.54

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Solution

The fourth proportional to 216,569.54, 324,900.68 and 64,778.54 is: 97,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,569.54 : 324,900.68 = 64,778.54 : x
  2. Step 2: Convert to fraction form
    216,569.54/324,900.68 = 64,778.54/x
  3. Step 3: Cross multiply
    216,569.54x = 324,900.68 × 64,778.54
  4. Step 4: Simplify right side
    216,569.54x = 21,046,589,747.01
  5. Step 5: Solve for x
    x = 21,046,589,747.01/216,569.54
  6. Step 6: Final answer
    x = 97,181.67

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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.