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Finding the Fourth Proportional to 308,801.40, 463,374.90 and 131,278.20

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Solution

The fourth proportional to 308,801.40, 463,374.90 and 131,278.20 is: 196,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,801.40 : 463,374.90 = 131,278.20 : x
  2. Step 2: Convert to fraction form
    308,801.40/463,374.90 = 131,278.20/x
  3. Step 3: Cross multiply
    308,801.40x = 463,374.90 × 131,278.20
  4. Step 4: Simplify right side
    308,801.40x = 60,831,022,797.18
  5. Step 5: Solve for x
    x = 60,831,022,797.18/308,801.40
  6. Step 6: Final answer
    x = 196,990.76

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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.