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Finding the Fourth Proportional to 374,429.60, 561,644.40 and 214,997.30

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Solution

The fourth proportional to 374,429.60, 561,644.40 and 214,997.30 is: 322,495.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,429.60 : 561,644.40 = 214,997.30 : x
  2. Step 2: Convert to fraction form
    374,429.60/561,644.40 = 214,997.30/x
  3. Step 3: Cross multiply
    374,429.60x = 561,644.40 × 214,997.30
  4. Step 4: Simplify right side
    374,429.60x = 120,752,029,560.12
  5. Step 5: Solve for x
    x = 120,752,029,560.12/374,429.60
  6. Step 6: Final answer
    x = 322,495.95

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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.