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Finding the Fourth Proportional to 489,620.40, 733,847.40 and 205,310.40

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Solution

The fourth proportional to 489,620.40, 733,847.40 and 205,310.40 is: 307,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,620.40 : 733,847.40 = 205,310.40 : x
  2. Step 2: Convert to fraction form
    489,620.40/733,847.40 = 205,310.40/x
  3. Step 3: Cross multiply
    489,620.40x = 733,847.40 × 205,310.40
  4. Step 4: Simplify right side
    489,620.40x = 150,666,503,232.96
  5. Step 5: Solve for x
    x = 150,666,503,232.96/489,620.40
  6. Step 6: Final answer
    x = 307,721.05

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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.