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Finding the Fourth Proportional to 300,811.28, 415,308.31 and 193,567.68

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Solution

The fourth proportional to 300,811.28, 415,308.31 and 193,567.68 is: 267,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,811.28 : 415,308.31 = 193,567.68 : x
  2. Step 2: Convert to fraction form
    300,811.28/415,308.31 = 193,567.68/x
  3. Step 3: Cross multiply
    300,811.28x = 415,308.31 × 193,567.68
  4. Step 4: Simplify right side
    300,811.28x = 80,390,265,567.50
  5. Step 5: Solve for x
    x = 80,390,265,567.50/300,811.28
  6. Step 6: Final answer
    x = 267,244.85

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1.5x scale

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.