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Finding the Fourth Proportional to 228,650.78, 343,026.30 and 76,842.42

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Solution

The fourth proportional to 228,650.78, 343,026.30 and 76,842.42 is: 115,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,650.78 : 343,026.30 = 76,842.42 : x
  2. Step 2: Convert to fraction form
    228,650.78/343,026.30 = 76,842.42/x
  3. Step 3: Cross multiply
    228,650.78x = 343,026.30 × 76,842.42
  4. Step 4: Simplify right side
    228,650.78x = 26,358,971,015.65
  5. Step 5: Solve for x
    x = 26,358,971,015.65/228,650.78
  6. Step 6: Final answer
    x = 115,280.48

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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.