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Finding the Fourth Proportional to 437,591.90, 603,989.18 and 285,010.32

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Solution

The fourth proportional to 437,591.90, 603,989.18 and 285,010.32 is: 393,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,591.90 : 603,989.18 = 285,010.32 : x
  2. Step 2: Convert to fraction form
    437,591.90/603,989.18 = 285,010.32/x
  3. Step 3: Cross multiply
    437,591.90x = 603,989.18 × 285,010.32
  4. Step 4: Simplify right side
    437,591.90x = 172,143,149,468.34
  5. Step 5: Solve for x
    x = 172,143,149,468.34/437,591.90
  6. Step 6: Final answer
    x = 393,387.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.