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Finding the Fourth Proportional to 203,658.96, 305,490.69 and 61,505.45

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Solution

The fourth proportional to 203,658.96, 305,490.69 and 61,505.45 is: 92,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,658.96 : 305,490.69 = 61,505.45 : x
  2. Step 2: Convert to fraction form
    203,658.96/305,490.69 = 61,505.45/x
  3. Step 3: Cross multiply
    203,658.96x = 305,490.69 × 61,505.45
  4. Step 4: Simplify right side
    203,658.96x = 18,789,340,831.81
  5. Step 5: Solve for x
    x = 18,789,340,831.81/203,658.96
  6. Step 6: Final answer
    x = 92,258.85

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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.