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Finding the Fourth Proportional to 374,129.70, 561,245.34 and 121,327.74

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Solution

The fourth proportional to 374,129.70, 561,245.34 and 121,327.74 is: 182,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,129.70 : 561,245.34 = 121,327.74 : x
  2. Step 2: Convert to fraction form
    374,129.70/561,245.34 = 121,327.74/x
  3. Step 3: Cross multiply
    374,129.70x = 561,245.34 × 121,327.74
  4. Step 4: Simplify right side
    374,129.70x = 68,094,628,687.73
  5. Step 5: Solve for x
    x = 68,094,628,687.73/374,129.70
  6. Step 6: Final answer
    x = 182,008.08

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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.