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Finding the Fourth Proportional to 203,709.60, 305,564.40 and 148,413.60

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Solution

The fourth proportional to 203,709.60, 305,564.40 and 148,413.60 is: 222,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,709.60 : 305,564.40 = 148,413.60 : x
  2. Step 2: Convert to fraction form
    203,709.60/305,564.40 = 148,413.60/x
  3. Step 3: Cross multiply
    203,709.60x = 305,564.40 × 148,413.60
  4. Step 4: Simplify right side
    203,709.60x = 45,349,912,635.84
  5. Step 5: Solve for x
    x = 45,349,912,635.84/203,709.60
  6. Step 6: Final answer
    x = 222,620.40

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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.