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Finding the Fourth Proportional to 449,813.31, 620,741.84 and 245,865.57

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Solution

The fourth proportional to 449,813.31, 620,741.84 and 245,865.57 is: 339,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,813.31 : 620,741.84 = 245,865.57 : x
  2. Step 2: Convert to fraction form
    449,813.31/620,741.84 = 245,865.57/x
  3. Step 3: Cross multiply
    449,813.31x = 620,741.84 × 245,865.57
  4. Step 4: Simplify right side
    449,813.31x = 152,619,046,314.45
  5. Step 5: Solve for x
    x = 152,619,046,314.45/449,813.31
  6. Step 6: Final answer
    x = 339,294.20

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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.