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Finding the Fourth Proportional to 203,999.60, 305,999.40 and 148,012.40

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Solution

The fourth proportional to 203,999.60, 305,999.40 and 148,012.40 is: 222,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,999.60 : 305,999.40 = 148,012.40 : x
  2. Step 2: Convert to fraction form
    203,999.60/305,999.40 = 148,012.40/x
  3. Step 3: Cross multiply
    203,999.60x = 305,999.40 × 148,012.40
  4. Step 4: Simplify right side
    203,999.60x = 45,291,705,592.56
  5. Step 5: Solve for x
    x = 45,291,705,592.56/203,999.60
  6. Step 6: Final answer
    x = 222,018.60

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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.