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Finding the Fourth Proportional to 365,961.20, 548,941.80 and 129,327.80

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Solution

The fourth proportional to 365,961.20, 548,941.80 and 129,327.80 is: 193,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,961.20 : 548,941.80 = 129,327.80 : x
  2. Step 2: Convert to fraction form
    365,961.20/548,941.80 = 129,327.80/x
  3. Step 3: Cross multiply
    365,961.20x = 548,941.80 × 129,327.80
  4. Step 4: Simplify right side
    365,961.20x = 70,993,435,322.04
  5. Step 5: Solve for x
    x = 70,993,435,322.04/365,961.20
  6. Step 6: Final answer
    x = 193,991.70

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1.5x scale

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.