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Finding the Fourth Proportional to 449,435.43, 620,217.21 and 245,486.49

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Solution

The fourth proportional to 449,435.43, 620,217.21 and 245,486.49 is: 338,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,435.43 : 620,217.21 = 245,486.49 : x
  2. Step 2: Convert to fraction form
    449,435.43/620,217.21 = 245,486.49/x
  3. Step 3: Cross multiply
    449,435.43x = 620,217.21 × 245,486.49
  4. Step 4: Simplify right side
    449,435.43x = 152,254,942,819.41
  5. Step 5: Solve for x
    x = 152,254,942,819.41/449,435.43
  6. Step 6: Final answer
    x = 338,769.34

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1.5x scale

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.