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Finding the Fourth Proportional to 340,299.78, 510,764.74 and 171,938.60

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Solution

The fourth proportional to 340,299.78, 510,764.74 and 171,938.60 is: 258,067.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,299.78 : 510,764.74 = 171,938.60 : x
  2. Step 2: Convert to fraction form
    340,299.78/510,764.74 = 171,938.60/x
  3. Step 3: Cross multiply
    340,299.78x = 510,764.74 × 171,938.60
  4. Step 4: Simplify right side
    340,299.78x = 87,820,173,256.66
  5. Step 5: Solve for x
    x = 87,820,173,256.66/340,299.78
  6. Step 6: Final answer
    x = 258,067.09

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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.