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Finding the Fourth Proportional to 445,534.70, 668,376.93 and 220,906.22

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Solution

The fourth proportional to 445,534.70, 668,376.93 and 220,906.22 is: 331,396.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,534.70 : 668,376.93 = 220,906.22 : x
  2. Step 2: Convert to fraction form
    445,534.70/668,376.93 = 220,906.22/x
  3. Step 3: Cross multiply
    445,534.70x = 668,376.93 × 220,906.22
  4. Step 4: Simplify right side
    445,534.70x = 147,648,621,141.51
  5. Step 5: Solve for x
    x = 147,648,621,141.51/445,534.70
  6. Step 6: Final answer
    x = 331,396.46

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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.