Home / 221,021.60-331,821.48-131,228.24

Finding the Fourth Proportional to 221,021.60, 331,821.48 and 131,228.24

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Solution

The fourth proportional to 221,021.60, 331,821.48 and 131,228.24 is: 197,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,021.60 : 331,821.48 = 131,228.24 : x
  2. Step 2: Convert to fraction form
    221,021.60/331,821.48 = 131,228.24/x
  3. Step 3: Cross multiply
    221,021.60x = 331,821.48 × 131,228.24
  4. Step 4: Simplify right side
    221,021.60x = 43,544,348,814.60
  5. Step 5: Solve for x
    x = 43,544,348,814.60/221,021.60
  6. Step 6: Final answer
    x = 197,014.00

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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.