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Finding the Fourth Proportional to 280,209.88, 386,689.60 and 179,607.88

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Solution

The fourth proportional to 280,209.88, 386,689.60 and 179,607.88 is: 247,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,209.88 : 386,689.60 = 179,607.88 : x
  2. Step 2: Convert to fraction form
    280,209.88/386,689.60 = 179,607.88/x
  3. Step 3: Cross multiply
    280,209.88x = 386,689.60 × 179,607.88
  4. Step 4: Simplify right side
    280,209.88x = 69,452,499,274.05
  5. Step 5: Solve for x
    x = 69,452,499,274.05/280,209.88
  6. Step 6: Final answer
    x = 247,858.85

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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.