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Finding the Fourth Proportional to 437,564.40, 656,346.60 and 331,276.20

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Solution

The fourth proportional to 437,564.40, 656,346.60 and 331,276.20 is: 496,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,564.40 : 656,346.60 = 331,276.20 : x
  2. Step 2: Convert to fraction form
    437,564.40/656,346.60 = 331,276.20/x
  3. Step 3: Cross multiply
    437,564.40x = 656,346.60 × 331,276.20
  4. Step 4: Simplify right side
    437,564.40x = 217,432,007,530.92
  5. Step 5: Solve for x
    x = 217,432,007,530.92/437,564.40
  6. Step 6: Final answer
    x = 496,914.30

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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.