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Finding the Fourth Proportional to 374,213.70, 561,211.20 and 134,299.80

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Solution

The fourth proportional to 374,213.70, 561,211.20 and 134,299.80 is: 201,410.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,213.70 : 561,211.20 = 134,299.80 : x
  2. Step 2: Convert to fraction form
    374,213.70/561,211.20 = 134,299.80/x
  3. Step 3: Cross multiply
    374,213.70x = 561,211.20 × 134,299.80
  4. Step 4: Simplify right side
    374,213.70x = 75,370,551,917.76
  5. Step 5: Solve for x
    x = 75,370,551,917.76/374,213.70
  6. Step 6: Final answer
    x = 201,410.46

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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.