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Finding the Fourth Proportional to 351,598.34, 527,400.81 and 85,361.19

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Solution

The fourth proportional to 351,598.34, 527,400.81 and 85,361.19 is: 128,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,598.34 : 527,400.81 = 85,361.19 : x
  2. Step 2: Convert to fraction form
    351,598.34/527,400.81 = 85,361.19/x
  3. Step 3: Cross multiply
    351,598.34x = 527,400.81 × 85,361.19
  4. Step 4: Simplify right side
    351,598.34x = 45,019,560,748.56
  5. Step 5: Solve for x
    x = 45,019,560,748.56/351,598.34
  6. Step 6: Final answer
    x = 128,042.59

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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.