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Finding the Fourth Proportional to 394,779.65, 544,789.13 and 222,697.98

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Solution

The fourth proportional to 394,779.65, 544,789.13 and 222,697.98 is: 307,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,779.65 : 544,789.13 = 222,697.98 : x
  2. Step 2: Convert to fraction form
    394,779.65/544,789.13 = 222,697.98/x
  3. Step 3: Cross multiply
    394,779.65x = 544,789.13 × 222,697.98
  4. Step 4: Simplify right side
    394,779.65x = 121,323,437,663.47
  5. Step 5: Solve for x
    x = 121,323,437,663.47/394,779.65
  6. Step 6: Final answer
    x = 307,319.38

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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.