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Finding the Fourth Proportional to 394,484.56, 544,388.76 and 213,195.88

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Solution

The fourth proportional to 394,484.56, 544,388.76 and 213,195.88 is: 294,210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,484.56 : 544,388.76 = 213,195.88 : x
  2. Step 2: Convert to fraction form
    394,484.56/544,388.76 = 213,195.88/x
  3. Step 3: Cross multiply
    394,484.56x = 544,388.76 × 213,195.88
  4. Step 4: Simplify right side
    394,484.56x = 116,061,440,750.31
  5. Step 5: Solve for x
    x = 116,061,440,750.31/394,484.56
  6. Step 6: Final answer
    x = 294,210.35

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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.