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Finding the Fourth Proportional to 351,919.48, 527,880.26 and 85,679.96

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Solution

The fourth proportional to 351,919.48, 527,880.26 and 85,679.96 is: 128,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,919.48 : 527,880.26 = 85,679.96 : x
  2. Step 2: Convert to fraction form
    351,919.48/527,880.26 = 85,679.96/x
  3. Step 3: Cross multiply
    351,919.48x = 527,880.26 × 85,679.96
  4. Step 4: Simplify right side
    351,919.48x = 45,228,759,561.59
  5. Step 5: Solve for x
    x = 45,228,759,561.59/351,919.48
  6. Step 6: Final answer
    x = 128,520.19

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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.