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Finding the Fourth Proportional to 394,455.75, 544,349.10 and 213,167.62

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Solution

The fourth proportional to 394,455.75, 544,349.10 and 213,167.62 is: 294,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,455.75 : 544,349.10 = 213,167.62 : x
  2. Step 2: Convert to fraction form
    394,455.75/544,349.10 = 213,167.62/x
  3. Step 3: Cross multiply
    394,455.75x = 544,349.10 × 213,167.62
  4. Step 4: Simplify right side
    394,455.75x = 116,037,602,096.14
  5. Step 5: Solve for x
    x = 116,037,602,096.14/394,455.75
  6. Step 6: Final answer
    x = 294,171.40

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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.