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Finding the Fourth Proportional to 374,355.90, 561,270.84 and 131,137.47

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Solution

The fourth proportional to 374,355.90, 561,270.84 and 131,137.47 is: 196,614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,355.90 : 561,270.84 = 131,137.47 : x
  2. Step 2: Convert to fraction form
    374,355.90/561,270.84 = 131,137.47/x
  3. Step 3: Cross multiply
    374,355.90x = 561,270.84 × 131,137.47
  4. Step 4: Simplify right side
    374,355.90x = 73,603,637,942.37
  5. Step 5: Solve for x
    x = 73,603,637,942.37/374,355.90
  6. Step 6: Final answer
    x = 196,614.07

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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.