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Finding the Fourth Proportional to 449,517.03, 620,351.97 and 258,530.47

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Solution

The fourth proportional to 449,517.03, 620,351.97 and 258,530.47 is: 356,782.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,517.03 : 620,351.97 = 258,530.47 : x
  2. Step 2: Convert to fraction form
    449,517.03/620,351.97 = 258,530.47/x
  3. Step 3: Cross multiply
    449,517.03x = 620,351.97 × 258,530.47
  4. Step 4: Simplify right side
    449,517.03x = 160,379,883,849.16
  5. Step 5: Solve for x
    x = 160,379,883,849.16/449,517.03
  6. Step 6: Final answer
    x = 356,782.67

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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.