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Finding the Fourth Proportional to 362,039.08, 543,455.90 and 287,637.48

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Solution

The fourth proportional to 362,039.08, 543,455.90 and 287,637.48 is: 431,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,039.08 : 543,455.90 = 287,637.48 : x
  2. Step 2: Convert to fraction form
    362,039.08/543,455.90 = 287,637.48/x
  3. Step 3: Cross multiply
    362,039.08x = 543,455.90 × 287,637.48
  4. Step 4: Simplify right side
    362,039.08x = 156,318,285,567.13
  5. Step 5: Solve for x
    x = 156,318,285,567.13/362,039.08
  6. Step 6: Final answer
    x = 431,771.86

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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.