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Finding the Fourth Proportional to 493,645.57, 740,497.06 and 138,687.27

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Solution

The fourth proportional to 493,645.57, 740,497.06 and 138,687.27 is: 208,038.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,645.57 : 740,497.06 = 138,687.27 : x
  2. Step 2: Convert to fraction form
    493,645.57/740,497.06 = 138,687.27/x
  3. Step 3: Cross multiply
    493,645.57x = 740,497.06 × 138,687.27
  4. Step 4: Simplify right side
    493,645.57x = 102,697,511,991.94
  5. Step 5: Solve for x
    x = 102,697,511,991.94/493,645.57
  6. Step 6: Final answer
    x = 208,038.96

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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.