Home / 216,479.46-324,749.76-66,731.92

Finding the Fourth Proportional to 216,479.46, 324,749.76 and 66,731.92

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Solution

The fourth proportional to 216,479.46, 324,749.76 and 66,731.92 is: 100,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,479.46 : 324,749.76 = 66,731.92 : x
  2. Step 2: Convert to fraction form
    216,479.46/324,749.76 = 66,731.92/x
  3. Step 3: Cross multiply
    216,479.46x = 324,749.76 × 66,731.92
  4. Step 4: Simplify right side
    216,479.46x = 21,671,175,004.34
  5. Step 5: Solve for x
    x = 21,671,175,004.34/216,479.46
  6. Step 6: Final answer
    x = 100,107.30

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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.