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Finding the Fourth Proportional to 394,810.80, 544,837.32 and 213,522.92

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Solution

The fourth proportional to 394,810.80, 544,837.32 and 213,522.92 is: 294,660.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,810.80 : 544,837.32 = 213,522.92 : x
  2. Step 2: Convert to fraction form
    394,810.80/544,837.32 = 213,522.92/x
  3. Step 3: Cross multiply
    394,810.80x = 544,837.32 × 213,522.92
  4. Step 4: Simplify right side
    394,810.80x = 116,335,255,491.37
  5. Step 5: Solve for x
    x = 116,335,255,491.37/394,810.80
  6. Step 6: Final answer
    x = 294,660.77

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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.