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Finding the Fourth Proportional to 280,492.20, 387,093.74 and 171,562.39

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Solution

The fourth proportional to 280,492.20, 387,093.74 and 171,562.39 is: 236,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,492.20 : 387,093.74 = 171,562.39 : x
  2. Step 2: Convert to fraction form
    280,492.20/387,093.74 = 171,562.39/x
  3. Step 3: Cross multiply
    280,492.20x = 387,093.74 × 171,562.39
  4. Step 4: Simplify right side
    280,492.20x = 66,410,727,188.44
  5. Step 5: Solve for x
    x = 66,410,727,188.44/280,492.20
  6. Step 6: Final answer
    x = 236,764.97

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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.