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Finding the Fourth Proportional to 379,265.72, 523,401.82 and 218,120.67

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Solution

The fourth proportional to 379,265.72, 523,401.82 and 218,120.67 is: 301,015.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,265.72 : 523,401.82 = 218,120.67 : x
  2. Step 2: Convert to fraction form
    379,265.72/523,401.82 = 218,120.67/x
  3. Step 3: Cross multiply
    379,265.72x = 523,401.82 × 218,120.67
  4. Step 4: Simplify right side
    379,265.72x = 114,164,755,112.32
  5. Step 5: Solve for x
    x = 114,164,755,112.32/379,265.72
  6. Step 6: Final answer
    x = 301,015.23

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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.