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Finding the Fourth Proportional to 261,432.96, 392,108.43 and 71,907.54

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Solution

The fourth proportional to 261,432.96, 392,108.43 and 71,907.54 is: 107,850.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,432.96 : 392,108.43 = 71,907.54 : x
  2. Step 2: Convert to fraction form
    261,432.96/392,108.43 = 71,907.54/x
  3. Step 3: Cross multiply
    261,432.96x = 392,108.43 × 71,907.54
  4. Step 4: Simplify right side
    261,432.96x = 28,195,552,614.56
  5. Step 5: Solve for x
    x = 28,195,552,614.56/261,432.96
  6. Step 6: Final answer
    x = 107,850.03

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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.