Home / 280,543.20-420,353.10-162,007.80

Finding the Fourth Proportional to 280,543.20, 420,353.10 and 162,007.80

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Solution

The fourth proportional to 280,543.20, 420,353.10 and 162,007.80 is: 242,745.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,543.20 : 420,353.10 = 162,007.80 : x
  2. Step 2: Convert to fraction form
    280,543.20/420,353.10 = 162,007.80/x
  3. Step 3: Cross multiply
    280,543.20x = 420,353.10 × 162,007.80
  4. Step 4: Simplify right side
    280,543.20x = 68,100,480,954.18
  5. Step 5: Solve for x
    x = 68,100,480,954.18/280,543.20
  6. Step 6: Final answer
    x = 242,745.08

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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.