Home / 449,012.40-619,743.48-258,136.68

Finding the Fourth Proportional to 449,012.40, 619,743.48 and 258,136.68

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Solution

The fourth proportional to 449,012.40, 619,743.48 and 258,136.68 is: 356,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,012.40 : 619,743.48 = 258,136.68 : x
  2. Step 2: Convert to fraction form
    449,012.40/619,743.48 = 258,136.68/x
  3. Step 3: Cross multiply
    449,012.40x = 619,743.48 × 258,136.68
  4. Step 4: Simplify right side
    449,012.40x = 159,978,524,378.85
  5. Step 5: Solve for x
    x = 159,978,524,378.85/449,012.40
  6. Step 6: Final answer
    x = 356,289.77

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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.