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Finding the Fourth Proportional to 201,311.20, 301,966.80 and 131,327.20

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Solution

The fourth proportional to 201,311.20, 301,966.80 and 131,327.20 is: 196,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,311.20 : 301,966.80 = 131,327.20 : x
  2. Step 2: Convert to fraction form
    201,311.20/301,966.80 = 131,327.20/x
  3. Step 3: Cross multiply
    201,311.20x = 301,966.80 × 131,327.20
  4. Step 4: Simplify right side
    201,311.20x = 39,656,454,336.96
  5. Step 5: Solve for x
    x = 39,656,454,336.96/201,311.20
  6. Step 6: Final answer
    x = 196,990.80

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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.