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Finding the Fourth Proportional to 394,624.71, 544,581.45 and 213,336.81

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Solution

The fourth proportional to 394,624.71, 544,581.45 and 213,336.81 is: 294,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,624.71 : 544,581.45 = 213,336.81 : x
  2. Step 2: Convert to fraction form
    394,624.71/544,581.45 = 213,336.81/x
  3. Step 3: Cross multiply
    394,624.71x = 544,581.45 × 213,336.81
  4. Step 4: Simplify right side
    394,624.71x = 116,179,269,328.17
  5. Step 5: Solve for x
    x = 116,179,269,328.17/394,624.71
  6. Step 6: Final answer
    x = 294,404.45

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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.