Home / 276,985.20-415,477.80-90,015.60

Finding the Fourth Proportional to 276,985.20, 415,477.80 and 90,015.60

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Solution

The fourth proportional to 276,985.20, 415,477.80 and 90,015.60 is: 135,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,985.20 : 415,477.80 = 90,015.60 : x
  2. Step 2: Convert to fraction form
    276,985.20/415,477.80 = 90,015.60/x
  3. Step 3: Cross multiply
    276,985.20x = 415,477.80 × 90,015.60
  4. Step 4: Simplify right side
    276,985.20x = 37,399,483,453.68
  5. Step 5: Solve for x
    x = 37,399,483,453.68/276,985.20
  6. Step 6: Final answer
    x = 135,023.40

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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.