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Finding the Fourth Proportional to 438,200.70, 655,571.62 and 331,890.98

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Solution

The fourth proportional to 438,200.70, 655,571.62 and 331,890.98 is: 496,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,200.70 : 655,571.62 = 331,890.98 : x
  2. Step 2: Convert to fraction form
    438,200.70/655,571.62 = 331,890.98/x
  3. Step 3: Cross multiply
    438,200.70x = 655,571.62 × 331,890.98
  4. Step 4: Simplify right side
    438,200.70x = 217,578,302,692.11
  5. Step 5: Solve for x
    x = 217,578,302,692.11/438,200.70
  6. Step 6: Final answer
    x = 496,526.60

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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.