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Finding the Fourth Proportional to 493,879.59, 740,819.16 and 138,893.58

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Solution

The fourth proportional to 493,879.59, 740,819.16 and 138,893.58 is: 208,340.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,879.59 : 740,819.16 = 138,893.58 : x
  2. Step 2: Convert to fraction form
    493,879.59/740,819.16 = 138,893.58/x
  3. Step 3: Cross multiply
    493,879.59x = 740,819.16 × 138,893.58
  4. Step 4: Simplify right side
    493,879.59x = 102,895,025,264.99
  5. Step 5: Solve for x
    x = 102,895,025,264.99/493,879.59
  6. Step 6: Final answer
    x = 208,340.31

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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.