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Finding the Fourth Proportional to 221,195.20, 331,792.80 and 96,779.20

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Solution

The fourth proportional to 221,195.20, 331,792.80 and 96,779.20 is: 145,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,195.20 : 331,792.80 = 96,779.20 : x
  2. Step 2: Convert to fraction form
    221,195.20/331,792.80 = 96,779.20/x
  3. Step 3: Cross multiply
    221,195.20x = 331,792.80 × 96,779.20
  4. Step 4: Simplify right side
    221,195.20x = 32,110,641,749.76
  5. Step 5: Solve for x
    x = 32,110,641,749.76/221,195.20
  6. Step 6: Final answer
    x = 145,168.80

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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.