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Finding the Fourth Proportional to 419,963.90, 629,945.85 and 252,002.30

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Solution

The fourth proportional to 419,963.90, 629,945.85 and 252,002.30 is: 378,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,963.90 : 629,945.85 = 252,002.30 : x
  2. Step 2: Convert to fraction form
    419,963.90/629,945.85 = 252,002.30/x
  3. Step 3: Cross multiply
    419,963.90x = 629,945.85 × 252,002.30
  4. Step 4: Simplify right side
    419,963.90x = 158,747,803,075.46
  5. Step 5: Solve for x
    x = 158,747,803,075.46/419,963.90
  6. Step 6: Final answer
    x = 378,003.45

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Similar ratio
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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.