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Finding the Fourth Proportional to 394,507.60, 544,419.20 and 213,218.96

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Solution

The fourth proportional to 394,507.60, 544,419.20 and 213,218.96 is: 294,241.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,507.60 : 544,419.20 = 213,218.96 : x
  2. Step 2: Convert to fraction form
    394,507.60/544,419.20 = 213,218.96/x
  3. Step 3: Cross multiply
    394,507.60x = 544,419.20 × 213,218.96
  4. Step 4: Simplify right side
    394,507.60x = 116,080,495,628.03
  5. Step 5: Solve for x
    x = 116,080,495,628.03/394,507.60
  6. Step 6: Final answer
    x = 294,241.47

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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.