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Finding the Fourth Proportional to 446,997.78, 670,537.20 and 147,479.22

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Solution

The fourth proportional to 446,997.78, 670,537.20 and 147,479.22 is: 221,232.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,997.78 : 670,537.20 = 147,479.22 : x
  2. Step 2: Convert to fraction form
    446,997.78/670,537.20 = 147,479.22/x
  3. Step 3: Cross multiply
    446,997.78x = 670,537.20 × 147,479.22
  4. Step 4: Simplify right side
    446,997.78x = 98,890,303,236.98
  5. Step 5: Solve for x
    x = 98,890,303,236.98/446,997.78
  6. Step 6: Final answer
    x = 221,232.20

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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.