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Finding the Fourth Proportional to 393,228.36, 542,654.82 and 214,380.36

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Solution

The fourth proportional to 393,228.36, 542,654.82 and 214,380.36 is: 295,844.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,228.36 : 542,654.82 = 214,380.36 : x
  2. Step 2: Convert to fraction form
    393,228.36/542,654.82 = 214,380.36/x
  3. Step 3: Cross multiply
    393,228.36x = 542,654.82 × 214,380.36
  4. Step 4: Simplify right side
    393,228.36x = 116,334,535,667.34
  5. Step 5: Solve for x
    x = 116,334,535,667.34/393,228.36
  6. Step 6: Final answer
    x = 295,844.72

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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.