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Finding the Fourth Proportional to 490,682.80, 736,072.80 and 170,785.45

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Solution

The fourth proportional to 490,682.80, 736,072.80 and 170,785.45 is: 256,195.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,682.80 : 736,072.80 = 170,785.45 : x
  2. Step 2: Convert to fraction form
    490,682.80/736,072.80 = 170,785.45/x
  3. Step 3: Cross multiply
    490,682.80x = 736,072.80 × 170,785.45
  4. Step 4: Simplify right side
    490,682.80x = 125,710,524,380.76
  5. Step 5: Solve for x
    x = 125,710,524,380.76/490,682.80
  6. Step 6: Final answer
    x = 256,195.09

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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.