Home / 216,621.36-324,910.50-66,821.04

Finding the Fourth Proportional to 216,621.36, 324,910.50 and 66,821.04

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Solution

The fourth proportional to 216,621.36, 324,910.50 and 66,821.04 is: 100,224.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,621.36 : 324,910.50 = 66,821.04 : x
  2. Step 2: Convert to fraction form
    216,621.36/324,910.50 = 66,821.04/x
  3. Step 3: Cross multiply
    216,621.36x = 324,910.50 × 66,821.04
  4. Step 4: Simplify right side
    216,621.36x = 21,710,857,516.92
  5. Step 5: Solve for x
    x = 21,710,857,516.92/216,621.36
  6. Step 6: Final answer
    x = 100,224.92

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1.5x scale

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.