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Finding the Fourth Proportional to 374,627.70, 561,941.55 and 280,149.30

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Solution

The fourth proportional to 374,627.70, 561,941.55 and 280,149.30 is: 420,223.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,627.70 : 561,941.55 = 280,149.30 : x
  2. Step 2: Convert to fraction form
    374,627.70/561,941.55 = 280,149.30/x
  3. Step 3: Cross multiply
    374,627.70x = 561,941.55 × 280,149.30
  4. Step 4: Simplify right side
    374,627.70x = 157,427,531,873.42
  5. Step 5: Solve for x
    x = 157,427,531,873.42/374,627.70
  6. Step 6: Final answer
    x = 420,223.95

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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.