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Finding the Fourth Proportional to 555,383.25, 766,429.29 and 300,734.64

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Solution

The fourth proportional to 555,383.25, 766,429.29 and 300,734.64 is: 415,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,383.25 : 766,429.29 = 300,734.64 : x
  2. Step 2: Convert to fraction form
    555,383.25/766,429.29 = 300,734.64/x
  3. Step 3: Cross multiply
    555,383.25x = 766,429.29 × 300,734.64
  4. Step 4: Simplify right side
    555,383.25x = 230,491,836,613.61
  5. Step 5: Solve for x
    x = 230,491,836,613.61/555,383.25
  6. Step 6: Final answer
    x = 415,014.02

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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.