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Finding the Fourth Proportional to 368,406.28, 552,628.86 and 119,107.72

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Solution

The fourth proportional to 368,406.28, 552,628.86 and 119,107.72 is: 178,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,406.28 : 552,628.86 = 119,107.72 : x
  2. Step 2: Convert to fraction form
    368,406.28/552,628.86 = 119,107.72/x
  3. Step 3: Cross multiply
    368,406.28x = 552,628.86 × 119,107.72
  4. Step 4: Simplify right side
    368,406.28x = 65,822,363,520.80
  5. Step 5: Solve for x
    x = 65,822,363,520.80/368,406.28
  6. Step 6: Final answer
    x = 178,667.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.