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Finding the Fourth Proportional to 203,580.44, 280,941.72 and 112,938.20

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Solution

The fourth proportional to 203,580.44, 280,941.72 and 112,938.20 is: 155,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,580.44 : 280,941.72 = 112,938.20 : x
  2. Step 2: Convert to fraction form
    203,580.44/280,941.72 = 112,938.20/x
  3. Step 3: Cross multiply
    203,580.44x = 280,941.72 × 112,938.20
  4. Step 4: Simplify right side
    203,580.44x = 31,729,052,161.70
  5. Step 5: Solve for x
    x = 31,729,052,161.70/203,580.44
  6. Step 6: Final answer
    x = 155,855.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.