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Finding the Fourth Proportional to 445,993.80, 669,228.80 and 209,338.52

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Solution

The fourth proportional to 445,993.80, 669,228.80 and 209,338.52 is: 314,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,993.80 : 669,228.80 = 209,338.52 : x
  2. Step 2: Convert to fraction form
    445,993.80/669,228.80 = 209,338.52/x
  3. Step 3: Cross multiply
    445,993.80x = 669,228.80 × 209,338.52
  4. Step 4: Simplify right side
    445,993.80x = 140,095,366,533.38
  5. Step 5: Solve for x
    x = 140,095,366,533.38/445,993.80
  6. Step 6: Final answer
    x = 314,119.54

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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.