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Finding the Fourth Proportional to 223,285.55, 308,137.55 and 121,313.03

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Solution

The fourth proportional to 223,285.55, 308,137.55 and 121,313.03 is: 167,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,285.55 : 308,137.55 = 121,313.03 : x
  2. Step 2: Convert to fraction form
    223,285.55/308,137.55 = 121,313.03/x
  3. Step 3: Cross multiply
    223,285.55x = 308,137.55 × 121,313.03
  4. Step 4: Simplify right side
    223,285.55x = 37,381,099,847.28
  5. Step 5: Solve for x
    x = 37,381,099,847.28/223,285.55
  6. Step 6: Final answer
    x = 167,413.88

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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.