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Finding the Fourth Proportional to 397,403.80, 596,105.70 and 271,432.60

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Solution

The fourth proportional to 397,403.80, 596,105.70 and 271,432.60 is: 407,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,403.80 : 596,105.70 = 271,432.60 : x
  2. Step 2: Convert to fraction form
    397,403.80/596,105.70 = 271,432.60/x
  3. Step 3: Cross multiply
    397,403.80x = 596,105.70 × 271,432.60
  4. Step 4: Simplify right side
    397,403.80x = 161,802,520,025.82
  5. Step 5: Solve for x
    x = 161,802,520,025.82/397,403.80
  6. Step 6: Final answer
    x = 407,148.90

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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.