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Finding the Fourth Proportional to 449,768.70, 620,679.35 and 245,819.61

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Solution

The fourth proportional to 449,768.70, 620,679.35 and 245,819.61 is: 339,230.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,768.70 : 620,679.35 = 245,819.61 : x
  2. Step 2: Convert to fraction form
    449,768.70/620,679.35 = 245,819.61/x
  3. Step 3: Cross multiply
    449,768.70x = 620,679.35 × 245,819.61
  4. Step 4: Simplify right side
    449,768.70x = 152,575,156,366.60
  5. Step 5: Solve for x
    x = 152,575,156,366.60/449,768.70
  6. Step 6: Final answer
    x = 339,230.27

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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.