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Finding the Fourth Proportional to 449,375.72, 620,258.02 and 279,513.32

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Solution

The fourth proportional to 449,375.72, 620,258.02 and 279,513.32 is: 385,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,375.72 : 620,258.02 = 279,513.32 : x
  2. Step 2: Convert to fraction form
    449,375.72/620,258.02 = 279,513.32/x
  3. Step 3: Cross multiply
    449,375.72x = 620,258.02 × 279,513.32
  4. Step 4: Simplify right side
    449,375.72x = 173,370,378,426.83
  5. Step 5: Solve for x
    x = 173,370,378,426.83/449,375.72
  6. Step 6: Final answer
    x = 385,802.73

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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.