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Finding the Fourth Proportional to 489,138.60, 733,671.45 and 204,755.70

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Solution

The fourth proportional to 489,138.60, 733,671.45 and 204,755.70 is: 307,118.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,138.60 : 733,671.45 = 204,755.70 : x
  2. Step 2: Convert to fraction form
    489,138.60/733,671.45 = 204,755.70/x
  3. Step 3: Cross multiply
    489,138.60x = 733,671.45 × 204,755.70
  4. Step 4: Simplify right side
    489,138.60x = 150,223,411,314.77
  5. Step 5: Solve for x
    x = 150,223,411,314.77/489,138.60
  6. Step 6: Final answer
    x = 307,118.29

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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.