Home / 394,136.36-543,908.15-212,848.30

Finding the Fourth Proportional to 394,136.36, 543,908.15 and 212,848.30

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Solution

The fourth proportional to 394,136.36, 543,908.15 and 212,848.30 is: 293,730.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,136.36 : 543,908.15 = 212,848.30 : x
  2. Step 2: Convert to fraction form
    394,136.36/543,908.15 = 212,848.30/x
  3. Step 3: Cross multiply
    394,136.36x = 543,908.15 × 212,848.30
  4. Step 4: Simplify right side
    394,136.36x = 115,769,921,299.86
  5. Step 5: Solve for x
    x = 115,769,921,299.86/394,136.36
  6. Step 6: Final answer
    x = 293,730.63

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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.