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Finding the Fourth Proportional to 449,597.21, 620,436.92 and 245,643.75

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Solution

The fourth proportional to 449,597.21, 620,436.92 and 245,643.75 is: 338,984.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,597.21 : 620,436.92 = 245,643.75 : x
  2. Step 2: Convert to fraction form
    449,597.21/620,436.92 = 245,643.75/x
  3. Step 3: Cross multiply
    449,597.21x = 620,436.92 × 245,643.75
  4. Step 4: Simplify right side
    449,597.21x = 152,406,450,439.03
  5. Step 5: Solve for x
    x = 152,406,450,439.03/449,597.21
  6. Step 6: Final answer
    x = 338,984.43

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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.