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Finding the Fourth Proportional to 489,129.20, 733,329.30 and 252,641.60

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Solution

The fourth proportional to 489,129.20, 733,329.30 and 252,641.60 is: 378,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,129.20 : 733,329.30 = 252,641.60 : x
  2. Step 2: Convert to fraction form
    489,129.20/733,329.30 = 252,641.60/x
  3. Step 3: Cross multiply
    489,129.20x = 733,329.30 × 252,641.60
  4. Step 4: Simplify right side
    489,129.20x = 185,269,487,678.88
  5. Step 5: Solve for x
    x = 185,269,487,678.88/489,129.20
  6. Step 6: Final answer
    x = 378,774.13

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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.