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Finding the Fourth Proportional to 228,380.38, 315,165.54 and 126,412.86

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Solution

The fourth proportional to 228,380.38, 315,165.54 and 126,412.86 is: 174,450.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,380.38 : 315,165.54 = 126,412.86 : x
  2. Step 2: Convert to fraction form
    228,380.38/315,165.54 = 126,412.86/x
  3. Step 3: Cross multiply
    228,380.38x = 315,165.54 × 126,412.86
  4. Step 4: Simplify right side
    228,380.38x = 39,840,977,284.84
  5. Step 5: Solve for x
    x = 39,840,977,284.84/228,380.38
  6. Step 6: Final answer
    x = 174,450.09

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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.