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Finding the Fourth Proportional to 493,755.87, 740,633.81 and 138,805.77

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Solution

The fourth proportional to 493,755.87, 740,633.81 and 138,805.77 is: 208,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,755.87 : 740,633.81 = 138,805.77 : x
  2. Step 2: Convert to fraction form
    493,755.87/740,633.81 = 138,805.77/x
  3. Step 3: Cross multiply
    493,755.87x = 740,633.81 × 138,805.77
  4. Step 4: Simplify right side
    493,755.87x = 102,804,245,591.06
  5. Step 5: Solve for x
    x = 102,804,245,591.06/493,755.87
  6. Step 6: Final answer
    x = 208,208.66

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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.