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Finding the Fourth Proportional to 445,803.80, 668,070.86 and 220,942.53

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Solution

The fourth proportional to 445,803.80, 668,070.86 and 220,942.53 is: 331,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,803.80 : 668,070.86 = 220,942.53 : x
  2. Step 2: Convert to fraction form
    445,803.80/668,070.86 = 220,942.53/x
  3. Step 3: Cross multiply
    445,803.80x = 668,070.86 × 220,942.53
  4. Step 4: Simplify right side
    445,803.80x = 147,605,264,922.96
  5. Step 5: Solve for x
    x = 147,605,264,922.96/445,803.80
  6. Step 6: Final answer
    x = 331,099.17

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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.