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Finding the Fourth Proportional to 374,356.90, 561,272.34 and 131,138.47

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Solution

The fourth proportional to 374,356.90, 561,272.34 and 131,138.47 is: 196,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,356.90 : 561,272.34 = 131,138.47 : x
  2. Step 2: Convert to fraction form
    374,356.90/561,272.34 = 131,138.47/x
  3. Step 3: Cross multiply
    374,356.90x = 561,272.34 × 131,138.47
  4. Step 4: Simplify right side
    374,356.90x = 73,604,395,920.92
  5. Step 5: Solve for x
    x = 73,604,395,920.92/374,356.90
  6. Step 6: Final answer
    x = 196,615.57

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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.