Home / 278,056.20-417,084.30-91,086.60

Finding the Fourth Proportional to 278,056.20, 417,084.30 and 91,086.60

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Solution

The fourth proportional to 278,056.20, 417,084.30 and 91,086.60 is: 136,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,056.20 : 417,084.30 = 91,086.60 : x
  2. Step 2: Convert to fraction form
    278,056.20/417,084.30 = 91,086.60/x
  3. Step 3: Cross multiply
    278,056.20x = 417,084.30 × 91,086.60
  4. Step 4: Simplify right side
    278,056.20x = 37,990,790,800.38
  5. Step 5: Solve for x
    x = 37,990,790,800.38/278,056.20
  6. Step 6: Final answer
    x = 136,629.90

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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.