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Finding the Fourth Proportional to 388,034,992.80, 581,202,183.60 and 344,952,842.40

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Solution

The fourth proportional to 388,034,992.80, 581,202,183.60 and 344,952,842.40 is: 516,673,364.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,034,992.80 : 581,202,183.60 = 344,952,842.40 : x
  2. Step 2: Convert to fraction form
    388,034,992.80/581,202,183.60 = 344,952,842.40/x
  3. Step 3: Cross multiply
    388,034,992.80x = 581,202,183.60 × 344,952,842.40
  4. Step 4: Simplify right side
    388,034,992.80x = 200,487,345,241,906,656
  5. Step 5: Solve for x
    x = 200,487,345,241,906,656/388,034,992.80
  6. Step 6: Final answer
    x = 516,673,364.42

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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.