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Finding the Fourth Proportional to 228,783.68, 343,229.98 and 79,025.20

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Solution

The fourth proportional to 228,783.68, 343,229.98 and 79,025.20 is: 118,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,783.68 : 343,229.98 = 79,025.20 : x
  2. Step 2: Convert to fraction form
    228,783.68/343,229.98 = 79,025.20/x
  3. Step 3: Cross multiply
    228,783.68x = 343,229.98 × 79,025.20
  4. Step 4: Simplify right side
    228,783.68x = 27,123,817,815.50
  5. Step 5: Solve for x
    x = 27,123,817,815.50/228,783.68
  6. Step 6: Final answer
    x = 118,556.61

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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.