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Finding the Fourth Proportional to 419,244.48, 628,778.40 and 134,960.40

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Solution

The fourth proportional to 419,244.48, 628,778.40 and 134,960.40 is: 202,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,244.48 : 628,778.40 = 134,960.40 : x
  2. Step 2: Convert to fraction form
    419,244.48/628,778.40 = 134,960.40/x
  3. Step 3: Cross multiply
    419,244.48x = 628,778.40 × 134,960.40
  4. Step 4: Simplify right side
    419,244.48x = 84,860,183,869.26
  5. Step 5: Solve for x
    x = 84,860,183,869.26/419,244.48
  6. Step 6: Final answer
    x = 202,412.17

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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.