Home / 216,367.12-324,581.40-66,619.86

Finding the Fourth Proportional to 216,367.12, 324,581.40 and 66,619.86

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Solution

The fourth proportional to 216,367.12, 324,581.40 and 66,619.86 is: 99,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,367.12 : 324,581.40 = 66,619.86 : x
  2. Step 2: Convert to fraction form
    216,367.12/324,581.40 = 66,619.86/x
  3. Step 3: Cross multiply
    216,367.12x = 324,581.40 × 66,619.86
  4. Step 4: Simplify right side
    216,367.12x = 21,623,567,426.60
  5. Step 5: Solve for x
    x = 21,623,567,426.60/216,367.12
  6. Step 6: Final answer
    x = 99,939.25

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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.