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Finding the Fourth Proportional to 203,627.60, 305,635.80 and 103,900.40

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Solution

The fourth proportional to 203,627.60, 305,635.80 and 103,900.40 is: 155,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,627.60 : 305,635.80 = 103,900.40 : x
  2. Step 2: Convert to fraction form
    203,627.60/305,635.80 = 103,900.40/x
  3. Step 3: Cross multiply
    203,627.60x = 305,635.80 × 103,900.40
  4. Step 4: Simplify right side
    203,627.60x = 31,755,681,874.32
  5. Step 5: Solve for x
    x = 31,755,681,874.32/203,627.60
  6. Step 6: Final answer
    x = 155,949.79

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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.