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Finding the Fourth Proportional to 613,295.36, 920,063.39 and 213,949.16

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Solution

The fourth proportional to 613,295.36, 920,063.39 and 213,949.16 is: 320,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,295.36 : 920,063.39 = 213,949.16 : x
  2. Step 2: Convert to fraction form
    613,295.36/920,063.39 = 213,949.16/x
  3. Step 3: Cross multiply
    613,295.36x = 920,063.39 × 213,949.16
  4. Step 4: Simplify right side
    613,295.36x = 196,846,783,767.19
  5. Step 5: Solve for x
    x = 196,846,783,767.19/613,295.36
  6. Step 6: Final answer
    x = 320,965.72

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1.5x scale

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.