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Finding the Fourth Proportional to 493,753.20, 681,379.80 and 278,893.68

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Solution

The fourth proportional to 493,753.20, 681,379.80 and 278,893.68 is: 384,873.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,753.20 : 681,379.80 = 278,893.68 : x
  2. Step 2: Convert to fraction form
    493,753.20/681,379.80 = 278,893.68/x
  3. Step 3: Cross multiply
    493,753.20x = 681,379.80 × 278,893.68
  4. Step 4: Simplify right side
    493,753.20x = 190,032,519,899.66
  5. Step 5: Solve for x
    x = 190,032,519,899.66/493,753.20
  6. Step 6: Final answer
    x = 384,873.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.