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Finding the Fourth Proportional to 511,126.74, 705,359.74 and 281,692.42

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Solution

The fourth proportional to 511,126.74, 705,359.74 and 281,692.42 is: 388,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,126.74 : 705,359.74 = 281,692.42 : x
  2. Step 2: Convert to fraction form
    511,126.74/705,359.74 = 281,692.42/x
  3. Step 3: Cross multiply
    511,126.74x = 705,359.74 × 281,692.42
  4. Step 4: Simplify right side
    511,126.74x = 198,694,492,131.17
  5. Step 5: Solve for x
    x = 198,694,492,131.17/511,126.74
  6. Step 6: Final answer
    x = 388,738.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.