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Finding the Fourth Proportional to 355,645.15, 533,843.70 and 347,613.57

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Solution

The fourth proportional to 355,645.15, 533,843.70 and 347,613.57 is: 521,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,645.15 : 533,843.70 = 347,613.57 : x
  2. Step 2: Convert to fraction form
    355,645.15/533,843.70 = 347,613.57/x
  3. Step 3: Cross multiply
    355,645.15x = 533,843.70 × 347,613.57
  4. Step 4: Simplify right side
    355,645.15x = 185,571,309,971.72
  5. Step 5: Solve for x
    x = 185,571,309,971.72/355,645.15
  6. Step 6: Final answer
    x = 521,787.83

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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.