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Finding the Fourth Proportional to 437,318.88, 655,415.10 and 212,243.73

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Solution

The fourth proportional to 437,318.88, 655,415.10 and 212,243.73 is: 318,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,318.88 : 655,415.10 = 212,243.73 : x
  2. Step 2: Convert to fraction form
    437,318.88/655,415.10 = 212,243.73/x
  3. Step 3: Cross multiply
    437,318.88x = 655,415.10 × 212,243.73
  4. Step 4: Simplify right side
    437,318.88x = 139,107,745,522.32
  5. Step 5: Solve for x
    x = 139,107,745,522.32/437,318.88
  6. Step 6: Final answer
    x = 318,092.25

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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.