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Finding the Fourth Proportional to 539,628.48, 809,429.76 and 140,269.32

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Solution

The fourth proportional to 539,628.48, 809,429.76 and 140,269.32 is: 210,400.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,628.48 : 809,429.76 = 140,269.32 : x
  2. Step 2: Convert to fraction form
    539,628.48/809,429.76 = 140,269.32/x
  3. Step 3: Cross multiply
    539,628.48x = 809,429.76 × 140,269.32
  4. Step 4: Simplify right side
    539,628.48x = 113,538,162,022.96
  5. Step 5: Solve for x
    x = 113,538,162,022.96/539,628.48
  6. Step 6: Final answer
    x = 210,400.61

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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.