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Finding the Fourth Proportional to 395,942.40, 594,309 and 218,532.96

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Solution

The fourth proportional to 395,942.40, 594,309 and 218,532.96 is: 328,017.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,942.40 : 594,309 = 218,532.96 : x
  2. Step 2: Convert to fraction form
    395,942.40/594,309 = 218,532.96/x
  3. Step 3: Cross multiply
    395,942.40x = 594,309 × 218,532.96
  4. Step 4: Simplify right side
    395,942.40x = 129,876,104,924.64
  5. Step 5: Solve for x
    x = 129,876,104,924.64/395,942.40
  6. Step 6: Final answer
    x = 328,017.67

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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.