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Finding the Fourth Proportional to 351,712.61, 485,340.86 and 196,676.67

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Solution

The fourth proportional to 351,712.61, 485,340.86 and 196,676.67 is: 271,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.61 : 485,340.86 = 196,676.67 : x
  2. Step 2: Convert to fraction form
    351,712.61/485,340.86 = 196,676.67/x
  3. Step 3: Cross multiply
    351,712.61x = 485,340.86 × 196,676.67
  4. Step 4: Simplify right side
    351,712.61x = 95,455,223,176.35
  5. Step 5: Solve for x
    x = 95,455,223,176.35/351,712.61
  6. Step 6: Final answer
    x = 271,401.20

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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.