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Finding the Fourth Proportional to 445,556.87, 668,068.39 and 141,819.82

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Solution

The fourth proportional to 445,556.87, 668,068.39 and 141,819.82 is: 212,644.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,556.87 : 668,068.39 = 141,819.82 : x
  2. Step 2: Convert to fraction form
    445,556.87/668,068.39 = 141,819.82/x
  3. Step 3: Cross multiply
    445,556.87x = 668,068.39 × 141,819.82
  4. Step 4: Simplify right side
    445,556.87x = 94,745,338,817.49
  5. Step 5: Solve for x
    x = 94,745,338,817.49/445,556.87
  6. Step 6: Final answer
    x = 212,644.77

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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.