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Finding the Fourth Proportional to 308,205.80, 462,389.70 and 97,843.40

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Solution

The fourth proportional to 308,205.80, 462,389.70 and 97,843.40 is: 146,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,205.80 : 462,389.70 = 97,843.40 : x
  2. Step 2: Convert to fraction form
    308,205.80/462,389.70 = 97,843.40/x
  3. Step 3: Cross multiply
    308,205.80x = 462,389.70 × 97,843.40
  4. Step 4: Simplify right side
    308,205.80x = 45,241,780,372.98
  5. Step 5: Solve for x
    x = 45,241,780,372.98/308,205.80
  6. Step 6: Final answer
    x = 146,790.81

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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.