Home / 280,552.20-420,887.38-90,997.74

Finding the Fourth Proportional to 280,552.20, 420,887.38 and 90,997.74

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Solution

The fourth proportional to 280,552.20, 420,887.38 and 90,997.74 is: 136,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552.20 : 420,887.38 = 90,997.74 : x
  2. Step 2: Convert to fraction form
    280,552.20/420,887.38 = 90,997.74/x
  3. Step 3: Cross multiply
    280,552.20x = 420,887.38 × 90,997.74
  4. Step 4: Simplify right side
    280,552.20x = 38,299,799,737.76
  5. Step 5: Solve for x
    x = 38,299,799,737.76/280,552.20
  6. Step 6: Final answer
    x = 136,515.77

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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.