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Finding the Fourth Proportional to 362,889.30, 543,167.55 and 257,913.30

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Solution

The fourth proportional to 362,889.30, 543,167.55 and 257,913.30 is: 386,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,889.30 : 543,167.55 = 257,913.30 : x
  2. Step 2: Convert to fraction form
    362,889.30/543,167.55 = 257,913.30/x
  3. Step 3: Cross multiply
    362,889.30x = 543,167.55 × 257,913.30
  4. Step 4: Simplify right side
    362,889.30x = 140,090,135,273.42
  5. Step 5: Solve for x
    x = 140,090,135,273.42/362,889.30
  6. Step 6: Final answer
    x = 386,040.96

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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.