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Finding the Fourth Proportional to 308,183.80, 462,356.70 and 97,821.40

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Solution

The fourth proportional to 308,183.80, 462,356.70 and 97,821.40 is: 146,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,183.80 : 462,356.70 = 97,821.40 : x
  2. Step 2: Convert to fraction form
    308,183.80/462,356.70 = 97,821.40/x
  3. Step 3: Cross multiply
    308,183.80x = 462,356.70 × 97,821.40
  4. Step 4: Simplify right side
    308,183.80x = 45,228,379,693.38
  5. Step 5: Solve for x
    x = 45,228,379,693.38/308,183.80
  6. Step 6: Final answer
    x = 146,757.81

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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.