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Finding the Fourth Proportional to 340,131.40, 510,180.90 and 115,469.80

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Solution

The fourth proportional to 340,131.40, 510,180.90 and 115,469.80 is: 173,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,131.40 : 510,180.90 = 115,469.80 : x
  2. Step 2: Convert to fraction form
    340,131.40/510,180.90 = 115,469.80/x
  3. Step 3: Cross multiply
    340,131.40x = 510,180.90 × 115,469.80
  4. Step 4: Simplify right side
    340,131.40x = 58,910,486,486.82
  5. Step 5: Solve for x
    x = 58,910,486,486.82/340,131.40
  6. Step 6: Final answer
    x = 173,199.20

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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.