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Finding the Fourth Proportional to 449,205.88, 673,905.68 and 129,355.60

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Solution

The fourth proportional to 449,205.88, 673,905.68 and 129,355.60 is: 194,061.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,205.88 : 673,905.68 = 129,355.60 : x
  2. Step 2: Convert to fraction form
    449,205.88/673,905.68 = 129,355.60/x
  3. Step 3: Cross multiply
    449,205.88x = 673,905.68 × 129,355.60
  4. Step 4: Simplify right side
    449,205.88x = 87,173,473,579.81
  5. Step 5: Solve for x
    x = 87,173,473,579.81/449,205.88
  6. Step 6: Final answer
    x = 194,061.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.