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Finding the Fourth Proportional to 380,952.60, 571,481.22 and 128,252.76

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Solution

The fourth proportional to 380,952.60, 571,481.22 and 128,252.76 is: 192,396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,952.60 : 571,481.22 = 128,252.76 : x
  2. Step 2: Convert to fraction form
    380,952.60/571,481.22 = 128,252.76/x
  3. Step 3: Cross multiply
    380,952.60x = 571,481.22 × 128,252.76
  4. Step 4: Simplify right side
    380,952.60x = 73,294,043,753.17
  5. Step 5: Solve for x
    x = 73,294,043,753.17/380,952.60
  6. Step 6: Final answer
    x = 192,396.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.