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Finding the Fourth Proportional to 394,861.77, 544,909.30 and 213,573.71

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Solution

The fourth proportional to 394,861.77, 544,909.30 and 213,573.71 is: 294,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,861.77 : 544,909.30 = 213,573.71 : x
  2. Step 2: Convert to fraction form
    394,861.77/544,909.30 = 213,573.71/x
  3. Step 3: Cross multiply
    394,861.77x = 544,909.30 × 213,573.71
  4. Step 4: Simplify right side
    394,861.77x = 116,378,301,642.84
  5. Step 5: Solve for x
    x = 116,378,301,642.84/394,861.77
  6. Step 6: Final answer
    x = 294,731.75

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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.