Home / 216,624.65-324,811.90-66,824.72

Finding the Fourth Proportional to 216,624.65, 324,811.90 and 66,824.72

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Solution

The fourth proportional to 216,624.65, 324,811.90 and 66,824.72 is: 100,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,624.65 : 324,811.90 = 66,824.72 : x
  2. Step 2: Convert to fraction form
    216,624.65/324,811.90 = 66,824.72/x
  3. Step 3: Cross multiply
    216,624.65x = 324,811.90 × 66,824.72
  4. Step 4: Simplify right side
    216,624.65x = 21,705,464,270.17
  5. Step 5: Solve for x
    x = 21,705,464,270.17/216,624.65
  6. Step 6: Final answer
    x = 100,198.50

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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.