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Finding the Fourth Proportional to 308,809.60, 463,257.60 and 131,315.20

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Solution

The fourth proportional to 308,809.60, 463,257.60 and 131,315.20 is: 196,991.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,809.60 : 463,257.60 = 131,315.20 : x
  2. Step 2: Convert to fraction form
    308,809.60/463,257.60 = 131,315.20/x
  3. Step 3: Cross multiply
    308,809.60x = 463,257.60 × 131,315.20
  4. Step 4: Simplify right side
    308,809.60x = 60,832,764,395.52
  5. Step 5: Solve for x
    x = 60,832,764,395.52/308,809.60
  6. Step 6: Final answer
    x = 196,991.17

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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.