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Finding the Fourth Proportional to 326,063.75, 449,495.53 and 228,971.88

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Solution

The fourth proportional to 326,063.75, 449,495.53 and 228,971.88 is: 315,649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,063.75 : 449,495.53 = 228,971.88 : x
  2. Step 2: Convert to fraction form
    326,063.75/449,495.53 = 228,971.88/x
  3. Step 3: Cross multiply
    326,063.75x = 449,495.53 × 228,971.88
  4. Step 4: Simplify right side
    326,063.75x = 102,921,835,983.27
  5. Step 5: Solve for x
    x = 102,921,835,983.27/326,063.75
  6. Step 6: Final answer
    x = 315,649.43

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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.