Home / 276,979.20-415,468.80-90,009.60

Finding the Fourth Proportional to 276,979.20, 415,468.80 and 90,009.60

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Solution

The fourth proportional to 276,979.20, 415,468.80 and 90,009.60 is: 135,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,979.20 : 415,468.80 = 90,009.60 : x
  2. Step 2: Convert to fraction form
    276,979.20/415,468.80 = 90,009.60/x
  3. Step 3: Cross multiply
    276,979.20x = 415,468.80 × 90,009.60
  4. Step 4: Simplify right side
    276,979.20x = 37,396,180,500.48
  5. Step 5: Solve for x
    x = 37,396,180,500.48/276,979.20
  6. Step 6: Final answer
    x = 135,014.40

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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.