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Finding the Fourth Proportional to 394,803.16, 544,828.52 and 213,515.22

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Solution

The fourth proportional to 394,803.16, 544,828.52 and 213,515.22 is: 294,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,803.16 : 544,828.52 = 213,515.22 : x
  2. Step 2: Convert to fraction form
    394,803.16/544,828.52 = 213,515.22/x
  3. Step 3: Cross multiply
    394,803.16x = 544,828.52 × 213,515.22
  4. Step 4: Simplify right side
    394,803.16x = 116,329,177,788.70
  5. Step 5: Solve for x
    x = 116,329,177,788.70/394,803.16
  6. Step 6: Final answer
    x = 294,651.08

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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.