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Finding the Fourth Proportional to 394,599.81, 544,547.03 and 213,311.85

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Solution

The fourth proportional to 394,599.81, 544,547.03 and 213,311.85 is: 294,369.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,599.81 : 544,547.03 = 213,311.85 : x
  2. Step 2: Convert to fraction form
    394,599.81/544,547.03 = 213,311.85/x
  3. Step 3: Cross multiply
    394,599.81x = 544,547.03 × 213,311.85
  4. Step 4: Simplify right side
    394,599.81x = 116,158,333,314.75
  5. Step 5: Solve for x
    x = 116,158,333,314.75/394,599.81
  6. Step 6: Final answer
    x = 294,369.97

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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.