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Finding the Fourth Proportional to 449,591.66, 620,429.25 and 245,638.20

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Solution

The fourth proportional to 449,591.66, 620,429.25 and 245,638.20 is: 338,976.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,591.66 : 620,429.25 = 245,638.20 : x
  2. Step 2: Convert to fraction form
    449,591.66/620,429.25 = 245,638.20/x
  3. Step 3: Cross multiply
    449,591.66x = 620,429.25 × 245,638.20
  4. Step 4: Simplify right side
    449,591.66x = 152,401,124,197.35
  5. Step 5: Solve for x
    x = 152,401,124,197.35/449,591.66
  6. Step 6: Final answer
    x = 338,976.76

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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.