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Finding the Fourth Proportional to 449,297.28, 620,031.32 and 245,348.60

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Solution

The fourth proportional to 449,297.28, 620,031.32 and 245,348.60 is: 338,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,297.28 : 620,031.32 = 245,348.60 : x
  2. Step 2: Convert to fraction form
    449,297.28/620,031.32 = 245,348.60/x
  3. Step 3: Cross multiply
    449,297.28x = 620,031.32 × 245,348.60
  4. Step 4: Simplify right side
    449,297.28x = 152,123,816,318.15
  5. Step 5: Solve for x
    x = 152,123,816,318.15/449,297.28
  6. Step 6: Final answer
    x = 338,581.65

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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.