Home / 216,216.15-324,355.23-66,469.00

Finding the Fourth Proportional to 216,216.15, 324,355.23 and 66,469.00

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Solution

The fourth proportional to 216,216.15, 324,355.23 and 66,469.00 is: 99,713.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,216.15 : 324,355.23 = 66,469.00 : x
  2. Step 2: Convert to fraction form
    216,216.15/324,355.23 = 66,469.00/x
  3. Step 3: Cross multiply
    216,216.15x = 324,355.23 × 66,469.00
  4. Step 4: Simplify right side
    216,216.15x = 21,559,565,828.75
  5. Step 5: Solve for x
    x = 21,559,565,828.75/216,216.15
  6. Step 6: Final answer
    x = 99,713.02

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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.