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Finding the Fourth Proportional to 438,202.58, 655,574.42 and 331,892.85

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Solution

The fourth proportional to 438,202.58, 655,574.42 and 331,892.85 is: 496,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,202.58 : 655,574.42 = 331,892.85 : x
  2. Step 2: Convert to fraction form
    438,202.58/655,574.42 = 331,892.85/x
  3. Step 3: Cross multiply
    438,202.58x = 655,574.42 × 331,892.85
  4. Step 4: Simplify right side
    438,202.58x = 217,580,463,470.63
  5. Step 5: Solve for x
    x = 217,580,463,470.63/438,202.58
  6. Step 6: Final answer
    x = 496,529.40

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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.