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Finding the Fourth Proportional to 394,407.28, 544,325.29 and 228,871.71

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Solution

The fourth proportional to 394,407.28, 544,325.29 and 228,871.71 is: 315,868.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,407.28 : 544,325.29 = 228,871.71 : x
  2. Step 2: Convert to fraction form
    394,407.28/544,325.29 = 228,871.71/x
  3. Step 3: Cross multiply
    394,407.28x = 544,325.29 × 228,871.71
  4. Step 4: Simplify right side
    394,407.28x = 124,580,656,052.56
  5. Step 5: Solve for x
    x = 124,580,656,052.56/394,407.28
  6. Step 6: Final answer
    x = 315,868.05

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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.