Home / 280,263.80-420,543.32-162,018.18

Finding the Fourth Proportional to 280,263.80, 420,543.32 and 162,018.18

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Solution

The fourth proportional to 280,263.80, 420,543.32 and 162,018.18 is: 243,112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,263.80 : 420,543.32 = 162,018.18 : x
  2. Step 2: Convert to fraction form
    280,263.80/420,543.32 = 162,018.18/x
  3. Step 3: Cross multiply
    280,263.80x = 420,543.32 × 162,018.18
  4. Step 4: Simplify right side
    280,263.80x = 68,135,662,507.47
  5. Step 5: Solve for x
    x = 68,135,662,507.47/280,263.80
  6. Step 6: Final answer
    x = 243,112.61

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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.