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Finding the Fourth Proportional to 638,406.90, 957,532.32 and 165,052.62

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Solution

The fourth proportional to 638,406.90, 957,532.32 and 165,052.62 is: 247,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,406.90 : 957,532.32 = 165,052.62 : x
  2. Step 2: Convert to fraction form
    638,406.90/957,532.32 = 165,052.62/x
  3. Step 3: Cross multiply
    638,406.90x = 957,532.32 × 165,052.62
  4. Step 4: Simplify right side
    638,406.90x = 158,043,218,150.68
  5. Step 5: Solve for x
    x = 158,043,218,150.68/638,406.90
  6. Step 6: Final answer
    x = 247,558.76

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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.