Home / 216,287.42-324,431.89-66,526.70

Finding the Fourth Proportional to 216,287.42, 324,431.89 and 66,526.70

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Solution

The fourth proportional to 216,287.42, 324,431.89 and 66,526.70 is: 99,790.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,287.42 : 324,431.89 = 66,526.70 : x
  2. Step 2: Convert to fraction form
    216,287.42/324,431.89 = 66,526.70/x
  3. Step 3: Cross multiply
    216,287.42x = 324,431.89 × 66,526.70
  4. Step 4: Simplify right side
    216,287.42x = 21,583,383,016.46
  5. Step 5: Solve for x
    x = 21,583,383,016.46/216,287.42
  6. Step 6: Final answer
    x = 99,790.28

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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.