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Finding the Fourth Proportional to 449,527.75, 620,366.12 and 258,540.91

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Solution

The fourth proportional to 449,527.75, 620,366.12 and 258,540.91 is: 356,796.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,527.75 : 620,366.12 = 258,540.91 : x
  2. Step 2: Convert to fraction form
    449,527.75/620,366.12 = 258,540.91/x
  3. Step 3: Cross multiply
    449,527.75x = 620,366.12 × 258,540.91
  4. Step 4: Simplify right side
    449,527.75x = 160,390,021,197.97
  5. Step 5: Solve for x
    x = 160,390,021,197.97/449,527.75
  6. Step 6: Final answer
    x = 356,796.71

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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.