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Finding the Fourth Proportional to 308,802.10, 462,857.55 and 131,278.90

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Solution

The fourth proportional to 308,802.10, 462,857.55 and 131,278.90 is: 196,771.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,802.10 : 462,857.55 = 131,278.90 : x
  2. Step 2: Convert to fraction form
    308,802.10/462,857.55 = 131,278.90/x
  3. Step 3: Cross multiply
    308,802.10x = 462,857.55 × 131,278.90
  4. Step 4: Simplify right side
    308,802.10x = 60,763,430,020.70
  5. Step 5: Solve for x
    x = 60,763,430,020.70/308,802.10
  6. Step 6: Final answer
    x = 196,771.43

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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.