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Finding the Fourth Proportional to 493,403.00, 681,060.33 and 289,379.48

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Solution

The fourth proportional to 493,403.00, 681,060.33 and 289,379.48 is: 399,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,403.00 : 681,060.33 = 289,379.48 : x
  2. Step 2: Convert to fraction form
    493,403.00/681,060.33 = 289,379.48/x
  3. Step 3: Cross multiply
    493,403.00x = 681,060.33 × 289,379.48
  4. Step 4: Simplify right side
    493,403.00x = 197,084,880,738.73
  5. Step 5: Solve for x
    x = 197,084,880,738.73/493,403.00
  6. Step 6: Final answer
    x = 399,439.98

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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.