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Finding the Fourth Proportional to 280,100.60, 386,571.52 and 159,260

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Solution

The fourth proportional to 280,100.60, 386,571.52 and 159,260 is: 219,797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,100.60 : 386,571.52 = 159,260 : x
  2. Step 2: Convert to fraction form
    280,100.60/386,571.52 = 159,260/x
  3. Step 3: Cross multiply
    280,100.60x = 386,571.52 × 159,260
  4. Step 4: Simplify right side
    280,100.60x = 61,565,380,275.20
  5. Step 5: Solve for x
    x = 61,565,380,275.20/280,100.60
  6. Step 6: Final answer
    x = 219,797.39

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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.