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Finding the Fourth Proportional to 215,785,391.65, 323,678,087.48 and 215,785,391.65

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Solution

The fourth proportional to 215,785,391.65, 323,678,087.48 and 215,785,391.65 is: 323,678,087.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,785,391.65 : 323,678,087.48 = 215,785,391.65 : x
  2. Step 2: Convert to fraction form
    215,785,391.65/323,678,087.48 = 215,785,391.65/x
  3. Step 3: Cross multiply
    215,785,391.65x = 323,678,087.48 × 215,785,391.65
  4. Step 4: Simplify right side
    215,785,391.65x = 69,845,002,874,315,840
  5. Step 5: Solve for x
    x = 69,845,002,874,315,840/215,785,391.65
  6. Step 6: Final answer
    x = 323,678,087.48

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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.