Home / 216,581.72-324,903.12-66,834.20

Finding the Fourth Proportional to 216,581.72, 324,903.12 and 66,834.20

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Solution

The fourth proportional to 216,581.72, 324,903.12 and 66,834.20 is: 100,260.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,581.72 : 324,903.12 = 66,834.20 : x
  2. Step 2: Convert to fraction form
    216,581.72/324,903.12 = 66,834.20/x
  3. Step 3: Cross multiply
    216,581.72x = 324,903.12 × 66,834.20
  4. Step 4: Simplify right side
    216,581.72x = 21,714,640,102.70
  5. Step 5: Solve for x
    x = 21,714,640,102.70/216,581.72
  6. Step 6: Final answer
    x = 100,260.72

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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.