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Finding the Fourth Proportional to 280,150.60, 386,641.01 and 159,310.05

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Solution

The fourth proportional to 280,150.60, 386,641.01 and 159,310.05 is: 219,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,150.60 : 386,641.01 = 159,310.05 : x
  2. Step 2: Convert to fraction form
    280,150.60/386,641.01 = 159,310.05/x
  3. Step 3: Cross multiply
    280,150.60x = 386,641.01 × 159,310.05
  4. Step 4: Simplify right side
    280,150.60x = 61,595,798,910.72
  5. Step 5: Solve for x
    x = 61,595,798,910.72/280,150.60
  6. Step 6: Final answer
    x = 219,866.74

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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.