Home / 280,451.35-420,615.06-80,727.22

Finding the Fourth Proportional to 280,451.35, 420,615.06 and 80,727.22

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Solution

The fourth proportional to 280,451.35, 420,615.06 and 80,727.22 is: 121,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,451.35 : 420,615.06 = 80,727.22 : x
  2. Step 2: Convert to fraction form
    280,451.35/420,615.06 = 80,727.22/x
  3. Step 3: Cross multiply
    280,451.35x = 420,615.06 × 80,727.22
  4. Step 4: Simplify right side
    280,451.35x = 33,955,084,483.93
  5. Step 5: Solve for x
    x = 33,955,084,483.93/280,451.35
  6. Step 6: Final answer
    x = 121,072.99

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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.