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Finding the Fourth Proportional to 477,015.92, 658,138.28 and 285,959.60

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Solution

The fourth proportional to 477,015.92, 658,138.28 and 285,959.60 is: 394,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,015.92 : 658,138.28 = 285,959.60 : x
  2. Step 2: Convert to fraction form
    477,015.92/658,138.28 = 285,959.60/x
  3. Step 3: Cross multiply
    477,015.92x = 658,138.28 × 285,959.60
  4. Step 4: Simplify right side
    477,015.92x = 188,200,959,293.49
  5. Step 5: Solve for x
    x = 188,200,959,293.49/477,015.92
  6. Step 6: Final answer
    x = 394,538.11

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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.