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Finding the Fourth Proportional to 308,793.90, 463,212.45 and 121,781.10

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Solution

The fourth proportional to 308,793.90, 463,212.45 and 121,781.10 is: 182,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,793.90 : 463,212.45 = 121,781.10 : x
  2. Step 2: Convert to fraction form
    308,793.90/463,212.45 = 121,781.10/x
  3. Step 3: Cross multiply
    308,793.90x = 463,212.45 × 121,781.10
  4. Step 4: Simplify right side
    308,793.90x = 56,410,521,694.70
  5. Step 5: Solve for x
    x = 56,410,521,694.70/308,793.90
  6. Step 6: Final answer
    x = 182,680.17

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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.