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Finding the Fourth Proportional to 445,804.80, 668,072.35 and 220,943.53

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Solution

The fourth proportional to 445,804.80, 668,072.35 and 220,943.53 is: 331,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,804.80 : 668,072.35 = 220,943.53 : x
  2. Step 2: Convert to fraction form
    445,804.80/668,072.35 = 220,943.53/x
  3. Step 3: Cross multiply
    445,804.80x = 668,072.35 × 220,943.53
  4. Step 4: Simplify right side
    445,804.80x = 147,606,263,304.40
  5. Step 5: Solve for x
    x = 147,606,263,304.40/445,804.80
  6. Step 6: Final answer
    x = 331,100.66

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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.