Home / 382,939.88-528,418.78-221,846.76

Finding the Fourth Proportional to 382,939.88, 528,418.78 and 221,846.76

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Solution

The fourth proportional to 382,939.88, 528,418.78 and 221,846.76 is: 306,126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,939.88 : 528,418.78 = 221,846.76 : x
  2. Step 2: Convert to fraction form
    382,939.88/528,418.78 = 221,846.76/x
  3. Step 3: Cross multiply
    382,939.88x = 528,418.78 × 221,846.76
  4. Step 4: Simplify right side
    382,939.88x = 117,227,994,266.15
  5. Step 5: Solve for x
    x = 117,227,994,266.15/382,939.88
  6. Step 6: Final answer
    x = 306,126.37

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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.