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Finding the Fourth Proportional to 620,234.80, 929,761.60 and 199,215.48

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Solution

The fourth proportional to 620,234.80, 929,761.60 and 199,215.48 is: 298,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,234.80 : 929,761.60 = 199,215.48 : x
  2. Step 2: Convert to fraction form
    620,234.80/929,761.60 = 199,215.48/x
  3. Step 3: Cross multiply
    620,234.80x = 929,761.60 × 199,215.48
  4. Step 4: Simplify right side
    620,234.80x = 185,222,903,429.57
  5. Step 5: Solve for x
    x = 185,222,903,429.57/620,234.80
  6. Step 6: Final answer
    x = 298,633.52

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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.