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Finding the Fourth Proportional to 351,898.44, 527,843.16 and 85,659.18

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Solution

The fourth proportional to 351,898.44, 527,843.16 and 85,659.18 is: 128,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,898.44 : 527,843.16 = 85,659.18 : x
  2. Step 2: Convert to fraction form
    351,898.44/527,843.16 = 85,659.18/x
  3. Step 3: Cross multiply
    351,898.44x = 527,843.16 × 85,659.18
  4. Step 4: Simplify right side
    351,898.44x = 45,214,612,254.21
  5. Step 5: Solve for x
    x = 45,214,612,254.21/351,898.44
  6. Step 6: Final answer
    x = 128,487.67

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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.