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Finding the Fourth Proportional to 220,499.40, 330,749.10 and 131,707.20

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Solution

The fourth proportional to 220,499.40, 330,749.10 and 131,707.20 is: 197,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,499.40 : 330,749.10 = 131,707.20 : x
  2. Step 2: Convert to fraction form
    220,499.40/330,749.10 = 131,707.20/x
  3. Step 3: Cross multiply
    220,499.40x = 330,749.10 × 131,707.20
  4. Step 4: Simplify right side
    220,499.40x = 43,562,037,863.52
  5. Step 5: Solve for x
    x = 43,562,037,863.52/220,499.40
  6. Step 6: Final answer
    x = 197,560.80

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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.