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Finding the Fourth Proportional to 278,203.75, 417,336.30 and 88,620.01

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Solution

The fourth proportional to 278,203.75, 417,336.30 and 88,620.01 is: 132,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,203.75 : 417,336.30 = 88,620.01 : x
  2. Step 2: Convert to fraction form
    278,203.75/417,336.30 = 88,620.01/x
  3. Step 3: Cross multiply
    278,203.75x = 417,336.30 × 88,620.01
  4. Step 4: Simplify right side
    278,203.75x = 36,984,346,036.02
  5. Step 5: Solve for x
    x = 36,984,346,036.02/278,203.75
  6. Step 6: Final answer
    x = 132,939.78

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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.