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Finding the Fourth Proportional to 278,863.66, 384,830.90 and 158,027.96

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Solution

The fourth proportional to 278,863.66, 384,830.90 and 158,027.96 is: 218,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,863.66 : 384,830.90 = 158,027.96 : x
  2. Step 2: Convert to fraction form
    278,863.66/384,830.90 = 158,027.96/x
  3. Step 3: Cross multiply
    278,863.66x = 384,830.90 × 158,027.96
  4. Step 4: Simplify right side
    278,863.66x = 60,814,042,836.51
  5. Step 5: Solve for x
    x = 60,814,042,836.51/278,863.66
  6. Step 6: Final answer
    x = 218,078.05

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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.