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Finding the Fourth Proportional to 449,888.62, 620,847.54 and 245,942

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Solution

The fourth proportional to 449,888.62, 620,847.54 and 245,942 is: 339,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,888.62 : 620,847.54 = 245,942 : x
  2. Step 2: Convert to fraction form
    449,888.62/620,847.54 = 245,942/x
  3. Step 3: Cross multiply
    449,888.62x = 620,847.54 × 245,942
  4. Step 4: Simplify right side
    449,888.62x = 152,692,485,682.68
  5. Step 5: Solve for x
    x = 152,692,485,682.68/449,888.62
  6. Step 6: Final answer
    x = 339,400.64

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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.