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Finding the Fourth Proportional to 278,003.80, 416,928.90 and 111,808.60

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Solution

The fourth proportional to 278,003.80, 416,928.90 and 111,808.60 is: 167,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,003.80 : 416,928.90 = 111,808.60 : x
  2. Step 2: Convert to fraction form
    278,003.80/416,928.90 = 111,808.60/x
  3. Step 3: Cross multiply
    278,003.80x = 416,928.90 × 111,808.60
  4. Step 4: Simplify right side
    278,003.80x = 46,616,236,608.54
  5. Step 5: Solve for x
    x = 46,616,236,608.54/278,003.80
  6. Step 6: Final answer
    x = 167,682.01

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1.5x scale

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.