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Finding the Fourth Proportional to 561,892.94, 775,262.79 and 320,170.31

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Solution

The fourth proportional to 561,892.94, 775,262.79 and 320,170.31 is: 441,749.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,892.94 : 775,262.79 = 320,170.31 : x
  2. Step 2: Convert to fraction form
    561,892.94/775,262.79 = 320,170.31/x
  3. Step 3: Cross multiply
    561,892.94x = 775,262.79 × 320,170.31
  4. Step 4: Simplify right side
    561,892.94x = 248,216,123,929.45
  5. Step 5: Solve for x
    x = 248,216,123,929.45/561,892.94
  6. Step 6: Final answer
    x = 441,749.86

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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.