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Finding the Fourth Proportional to 350,683.11, 483,619.81 and 221,396.97

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Solution

The fourth proportional to 350,683.11, 483,619.81 and 221,396.97 is: 305,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,683.11 : 483,619.81 = 221,396.97 : x
  2. Step 2: Convert to fraction form
    350,683.11/483,619.81 = 221,396.97/x
  3. Step 3: Cross multiply
    350,683.11x = 483,619.81 × 221,396.97
  4. Step 4: Simplify right side
    350,683.11x = 107,071,959,458.99
  5. Step 5: Solve for x
    x = 107,071,959,458.99/350,683.11
  6. Step 6: Final answer
    x = 305,323.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.