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Finding the Fourth Proportional to 220,223.60, 330,335.40 and 131,431.40

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Solution

The fourth proportional to 220,223.60, 330,335.40 and 131,431.40 is: 197,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,223.60 : 330,335.40 = 131,431.40 : x
  2. Step 2: Convert to fraction form
    220,223.60/330,335.40 = 131,431.40/x
  3. Step 3: Cross multiply
    220,223.60x = 330,335.40 × 131,431.40
  4. Step 4: Simplify right side
    220,223.60x = 43,416,444,091.56
  5. Step 5: Solve for x
    x = 43,416,444,091.56/220,223.60
  6. Step 6: Final answer
    x = 197,147.10

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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.