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Finding the Fourth Proportional to 547,798.20, 755,965.23 and 306,090.96

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Solution

The fourth proportional to 547,798.20, 755,965.23 and 306,090.96 is: 422,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,798.20 : 755,965.23 = 306,090.96 : x
  2. Step 2: Convert to fraction form
    547,798.20/755,965.23 = 306,090.96/x
  3. Step 3: Cross multiply
    547,798.20x = 755,965.23 × 306,090.96
  4. Step 4: Simplify right side
    547,798.20x = 231,394,122,977.32
  5. Step 5: Solve for x
    x = 231,394,122,977.32/547,798.20
  6. Step 6: Final answer
    x = 422,407.60

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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.