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Finding the Fourth Proportional to 308,797.20, 463,416.96 and 131,428.80

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Solution

The fourth proportional to 308,797.20, 463,416.96 and 131,428.80 is: 197,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,797.20 : 463,416.96 = 131,428.80 : x
  2. Step 2: Convert to fraction form
    308,797.20/463,416.96 = 131,428.80/x
  3. Step 3: Cross multiply
    308,797.20x = 463,416.96 × 131,428.80
  4. Step 4: Simplify right side
    308,797.20x = 60,906,334,952.45
  5. Step 5: Solve for x
    x = 60,906,334,952.45/308,797.20
  6. Step 6: Final answer
    x = 197,237.33

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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.