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Finding the Fourth Proportional to 446,569.80, 669,912.78 and 147,081

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Solution

The fourth proportional to 446,569.80, 669,912.78 and 147,081 is: 220,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,569.80 : 669,912.78 = 147,081 : x
  2. Step 2: Convert to fraction form
    446,569.80/669,912.78 = 147,081/x
  3. Step 3: Cross multiply
    446,569.80x = 669,912.78 × 147,081
  4. Step 4: Simplify right side
    446,569.80x = 98,531,441,595.18
  5. Step 5: Solve for x
    x = 98,531,441,595.18/446,569.80
  6. Step 6: Final answer
    x = 220,640.63

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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.