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Finding the Fourth Proportional to 276,972.80, 415,459.20 and 171,449.60

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Solution

The fourth proportional to 276,972.80, 415,459.20 and 171,449.60 is: 257,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,972.80 : 415,459.20 = 171,449.60 : x
  2. Step 2: Convert to fraction form
    276,972.80/415,459.20 = 171,449.60/x
  3. Step 3: Cross multiply
    276,972.80x = 415,459.20 × 171,449.60
  4. Step 4: Simplify right side
    276,972.80x = 71,230,313,656.32
  5. Step 5: Solve for x
    x = 71,230,313,656.32/276,972.80
  6. Step 6: Final answer
    x = 257,174.40

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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.