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Finding the Fourth Proportional to 449,203.60, 619,874.40 and 245,213.92

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Solution

The fourth proportional to 449,203.60, 619,874.40 and 245,213.92 is: 338,380.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,203.60 : 619,874.40 = 245,213.92 : x
  2. Step 2: Convert to fraction form
    449,203.60/619,874.40 = 245,213.92/x
  3. Step 3: Cross multiply
    449,203.60x = 619,874.40 × 245,213.92
  4. Step 4: Simplify right side
    449,203.60x = 152,001,831,531.65
  5. Step 5: Solve for x
    x = 152,001,831,531.65/449,203.60
  6. Step 6: Final answer
    x = 338,380.71

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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.