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Finding the Fourth Proportional to 490,789.80, 677,330.84 and 273,039.50

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Solution

The fourth proportional to 490,789.80, 677,330.84 and 273,039.50 is: 376,817.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,789.80 : 677,330.84 = 273,039.50 : x
  2. Step 2: Convert to fraction form
    490,789.80/677,330.84 = 273,039.50/x
  3. Step 3: Cross multiply
    490,789.80x = 677,330.84 × 273,039.50
  4. Step 4: Simplify right side
    490,789.80x = 184,938,073,888.18
  5. Step 5: Solve for x
    x = 184,938,073,888.18/490,789.80
  6. Step 6: Final answer
    x = 376,817.27

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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.