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Finding the Fourth Proportional to 145,455.92, 218,183.52 and 40,274.54

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Solution

The fourth proportional to 145,455.92, 218,183.52 and 40,274.54 is: 60,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,455.92 : 218,183.52 = 40,274.54 : x
  2. Step 2: Convert to fraction form
    145,455.92/218,183.52 = 40,274.54/x
  3. Step 3: Cross multiply
    145,455.92x = 218,183.52 × 40,274.54
  4. Step 4: Simplify right side
    145,455.92x = 8,787,240,903.58
  5. Step 5: Solve for x
    x = 8,787,240,903.58/145,455.92
  6. Step 6: Final answer
    x = 60,411.71

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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.