Home / 221,207.20-331,810.80-131,394.40

Finding the Fourth Proportional to 221,207.20, 331,810.80 and 131,394.40

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Solution

The fourth proportional to 221,207.20, 331,810.80 and 131,394.40 is: 197,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,207.20 : 331,810.80 = 131,394.40 : x
  2. Step 2: Convert to fraction form
    221,207.20/331,810.80 = 131,394.40/x
  3. Step 3: Cross multiply
    221,207.20x = 331,810.80 × 131,394.40
  4. Step 4: Simplify right side
    221,207.20x = 43,598,080,979.52
  5. Step 5: Solve for x
    x = 43,598,080,979.52/221,207.20
  6. Step 6: Final answer
    x = 197,091.60

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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.