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Finding the Fourth Proportional to 280,229.94, 386,725.85 and 159,388.62

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Solution

The fourth proportional to 280,229.94, 386,725.85 and 159,388.62 is: 219,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229.94 : 386,725.85 = 159,388.62 : x
  2. Step 2: Convert to fraction form
    280,229.94/386,725.85 = 159,388.62/x
  3. Step 3: Cross multiply
    280,229.94x = 386,725.85 × 159,388.62
  4. Step 4: Simplify right side
    280,229.94x = 61,639,698,752.88
  5. Step 5: Solve for x
    x = 61,639,698,752.88/280,229.94
  6. Step 6: Final answer
    x = 219,961.15

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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.