Home / 203,305.20-280,660.32-135,362.40

Finding the Fourth Proportional to 203,305.20, 280,660.32 and 135,362.40

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Solution

The fourth proportional to 203,305.20, 280,660.32 and 135,362.40 is: 186,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,305.20 : 280,660.32 = 135,362.40 : x
  2. Step 2: Convert to fraction form
    203,305.20/280,660.32 = 135,362.40/x
  3. Step 3: Cross multiply
    203,305.20x = 280,660.32 × 135,362.40
  4. Step 4: Simplify right side
    203,305.20x = 37,990,854,499.97
  5. Step 5: Solve for x
    x = 37,990,854,499.97/203,305.20
  6. Step 6: Final answer
    x = 186,866.12

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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.