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Finding the Fourth Proportional to 308,543.80, 461,940.90 and 308,543.80

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Solution

The fourth proportional to 308,543.80, 461,940.90 and 308,543.80 is: 461,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,543.80 : 461,940.90 = 308,543.80 : x
  2. Step 2: Convert to fraction form
    308,543.80/461,940.90 = 308,543.80/x
  3. Step 3: Cross multiply
    308,543.80x = 461,940.90 × 308,543.80
  4. Step 4: Simplify right side
    308,543.80x = 142,529,000,661.42
  5. Step 5: Solve for x
    x = 142,529,000,661.42/308,543.80
  6. Step 6: Final answer
    x = 461,940.90

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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.