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Finding the Fourth Proportional to 561,768.92, 775,240.97 and 307,120.11

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Solution

The fourth proportional to 561,768.92, 775,240.97 and 307,120.11 is: 423,825.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,768.92 : 775,240.97 = 307,120.11 : x
  2. Step 2: Convert to fraction form
    561,768.92/775,240.97 = 307,120.11/x
  3. Step 3: Cross multiply
    561,768.92x = 775,240.97 × 307,120.11
  4. Step 4: Simplify right side
    561,768.92x = 238,092,091,982.91
  5. Step 5: Solve for x
    x = 238,092,091,982.91/561,768.92
  6. Step 6: Final answer
    x = 423,825.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.