Home / 308,966.20-463,449.30-131,428.60

Finding the Fourth Proportional to 308,966.20, 463,449.30 and 131,428.60

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Solution

The fourth proportional to 308,966.20, 463,449.30 and 131,428.60 is: 197,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,966.20 : 463,449.30 = 131,428.60 : x
  2. Step 2: Convert to fraction form
    308,966.20/463,449.30 = 131,428.60/x
  3. Step 3: Cross multiply
    308,966.20x = 463,449.30 × 131,428.60
  4. Step 4: Simplify right side
    308,966.20x = 60,910,492,669.98
  5. Step 5: Solve for x
    x = 60,910,492,669.98/308,966.20
  6. Step 6: Final answer
    x = 197,142.90

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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.