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Finding the Fourth Proportional to 143,284.60, 214,926.90 and 131,912.20

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Solution

The fourth proportional to 143,284.60, 214,926.90 and 131,912.20 is: 197,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,284.60 : 214,926.90 = 131,912.20 : x
  2. Step 2: Convert to fraction form
    143,284.60/214,926.90 = 131,912.20/x
  3. Step 3: Cross multiply
    143,284.60x = 214,926.90 × 131,912.20
  4. Step 4: Simplify right side
    143,284.60x = 28,351,480,218.18
  5. Step 5: Solve for x
    x = 28,351,480,218.18/143,284.60
  6. Step 6: Final answer
    x = 197,868.30

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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.