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Finding the Fourth Proportional to 228,508.60, 315,339.67 and 131,676.88

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Solution

The fourth proportional to 228,508.60, 315,339.67 and 131,676.88 is: 181,712.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,508.60 : 315,339.67 = 131,676.88 : x
  2. Step 2: Convert to fraction form
    228,508.60/315,339.67 = 131,676.88/x
  3. Step 3: Cross multiply
    228,508.60x = 315,339.67 × 131,676.88
  4. Step 4: Simplify right side
    228,508.60x = 41,522,942,226.83
  5. Step 5: Solve for x
    x = 41,522,942,226.83/228,508.60
  6. Step 6: Final answer
    x = 181,712.82

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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.