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Finding the Fourth Proportional to 278,574.60, 417,705 and 88,990.44

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Solution

The fourth proportional to 278,574.60, 417,705 and 88,990.44 is: 133,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,574.60 : 417,705 = 88,990.44 : x
  2. Step 2: Convert to fraction form
    278,574.60/417,705 = 88,990.44/x
  3. Step 3: Cross multiply
    278,574.60x = 417,705 × 88,990.44
  4. Step 4: Simplify right side
    278,574.60x = 37,171,751,740.20
  5. Step 5: Solve for x
    x = 37,171,751,740.20/278,574.60
  6. Step 6: Final answer
    x = 133,435.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.