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Finding the Fourth Proportional to 547,555.96, 755,619.12 and 305,842.04

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Solution

The fourth proportional to 547,555.96, 755,619.12 and 305,842.04 is: 422,057.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,555.96 : 755,619.12 = 305,842.04 : x
  2. Step 2: Convert to fraction form
    547,555.96/755,619.12 = 305,842.04/x
  3. Step 3: Cross multiply
    547,555.96x = 755,619.12 × 305,842.04
  4. Step 4: Simplify right side
    547,555.96x = 231,100,093,123.81
  5. Step 5: Solve for x
    x = 231,100,093,123.81/547,555.96
  6. Step 6: Final answer
    x = 422,057.49

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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.