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Finding the Fourth Proportional to 308,794.40, 463,213.20 and 121,781.60

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Solution

The fourth proportional to 308,794.40, 463,213.20 and 121,781.60 is: 182,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,794.40 : 463,213.20 = 121,781.60 : x
  2. Step 2: Convert to fraction form
    308,794.40/463,213.20 = 121,781.60/x
  3. Step 3: Cross multiply
    308,794.40x = 463,213.20 × 121,781.60
  4. Step 4: Simplify right side
    308,794.40x = 56,410,844,637.12
  5. Step 5: Solve for x
    x = 56,410,844,637.12/308,794.40
  6. Step 6: Final answer
    x = 182,680.92

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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.