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Finding the Fourth Proportional to 203,485.86, 280,753.11 and 160,331.55

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Solution

The fourth proportional to 203,485.86, 280,753.11 and 160,331.55 is: 221,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,485.86 : 280,753.11 = 160,331.55 : x
  2. Step 2: Convert to fraction form
    203,485.86/280,753.11 = 160,331.55/x
  3. Step 3: Cross multiply
    203,485.86x = 280,753.11 × 160,331.55
  4. Step 4: Simplify right side
    203,485.86x = 45,013,581,293.62
  5. Step 5: Solve for x
    x = 45,013,581,293.62/203,485.86
  6. Step 6: Final answer
    x = 221,212.33

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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.