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Finding the Fourth Proportional to 580,364.20, 870,234.30 and 206,338.60

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Solution

The fourth proportional to 580,364.20, 870,234.30 and 206,338.60 is: 309,396.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,364.20 : 870,234.30 = 206,338.60 : x
  2. Step 2: Convert to fraction form
    580,364.20/870,234.30 = 206,338.60/x
  3. Step 3: Cross multiply
    580,364.20x = 870,234.30 × 206,338.60
  4. Step 4: Simplify right side
    580,364.20x = 179,562,927,133.98
  5. Step 5: Solve for x
    x = 179,562,927,133.98/580,364.20
  6. Step 6: Final answer
    x = 309,396.97

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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.