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Finding the Fourth Proportional to 493,260.87, 739,833.39 and 138,303.48

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Solution

The fourth proportional to 493,260.87, 739,833.39 and 138,303.48 is: 207,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,260.87 : 739,833.39 = 138,303.48 : x
  2. Step 2: Convert to fraction form
    493,260.87/739,833.39 = 138,303.48/x
  3. Step 3: Cross multiply
    493,260.87x = 739,833.39 × 138,303.48
  4. Step 4: Simplify right side
    493,260.87x = 102,321,532,457.20
  5. Step 5: Solve for x
    x = 102,321,532,457.20/493,260.87
  6. Step 6: Final answer
    x = 207,438.98

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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.