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Finding the Fourth Proportional to 445,913.92, 668,620.23 and 146,369.42

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Solution

The fourth proportional to 445,913.92, 668,620.23 and 146,369.42 is: 219,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,913.92 : 668,620.23 = 146,369.42 : x
  2. Step 2: Convert to fraction form
    445,913.92/668,620.23 = 146,369.42/x
  3. Step 3: Cross multiply
    445,913.92x = 668,620.23 × 146,369.42
  4. Step 4: Simplify right side
    445,913.92x = 97,865,553,969.62
  5. Step 5: Solve for x
    x = 97,865,553,969.62/445,913.92
  6. Step 6: Final answer
    x = 219,471.85

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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.