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Finding the Fourth Proportional to 449,491.57, 620,317.22 and 258,505.11

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Solution

The fourth proportional to 449,491.57, 620,317.22 and 258,505.11 is: 356,747.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,491.57 : 620,317.22 = 258,505.11 : x
  2. Step 2: Convert to fraction form
    449,491.57/620,317.22 = 258,505.11/x
  3. Step 3: Cross multiply
    449,491.57x = 620,317.22 × 258,505.11
  4. Step 4: Simplify right side
    449,491.57x = 160,355,169,898.47
  5. Step 5: Solve for x
    x = 160,355,169,898.47/449,491.57
  6. Step 6: Final answer
    x = 356,747.89

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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.