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Finding the Fourth Proportional to 374,043.60, 561,310.92 and 137,388.24

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Solution

The fourth proportional to 374,043.60, 561,310.92 and 137,388.24 is: 206,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,043.60 : 561,310.92 = 137,388.24 : x
  2. Step 2: Convert to fraction form
    374,043.60/561,310.92 = 137,388.24/x
  3. Step 3: Cross multiply
    374,043.60x = 561,310.92 × 137,388.24
  4. Step 4: Simplify right side
    374,043.60x = 77,117,519,391.58
  5. Step 5: Solve for x
    x = 77,117,519,391.58/374,043.60
  6. Step 6: Final answer
    x = 206,172.54

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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.