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Finding the Fourth Proportional to 550,257.43, 759,354.55 and 305,279.35

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Solution

The fourth proportional to 550,257.43, 759,354.55 and 305,279.35 is: 421,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,257.43 : 759,354.55 = 305,279.35 : x
  2. Step 2: Convert to fraction form
    550,257.43/759,354.55 = 305,279.35/x
  3. Step 3: Cross multiply
    550,257.43x = 759,354.55 × 305,279.35
  4. Step 4: Simplify right side
    550,257.43x = 231,815,260,781.96
  5. Step 5: Solve for x
    x = 231,815,260,781.96/550,257.43
  6. Step 6: Final answer
    x = 421,285.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.