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Finding the Fourth Proportional to 339,539.06, 468,591.82 and 218,931.42

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Solution

The fourth proportional to 339,539.06, 468,591.82 and 218,931.42 is: 302,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,539.06 : 468,591.82 = 218,931.42 : x
  2. Step 2: Convert to fraction form
    339,539.06/468,591.82 = 218,931.42/x
  3. Step 3: Cross multiply
    339,539.06x = 468,591.82 × 218,931.42
  4. Step 4: Simplify right side
    339,539.06x = 102,589,472,552.98
  5. Step 5: Solve for x
    x = 102,589,472,552.98/339,539.06
  6. Step 6: Final answer
    x = 302,143.36

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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.