Home / 382,943.70-528,416.46-221,776.38

Finding the Fourth Proportional to 382,943.70, 528,416.46 and 221,776.38

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Solution

The fourth proportional to 382,943.70, 528,416.46 and 221,776.38 is: 306,024.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,943.70 : 528,416.46 = 221,776.38 : x
  2. Step 2: Convert to fraction form
    382,943.70/528,416.46 = 221,776.38/x
  3. Step 3: Cross multiply
    382,943.70x = 528,416.46 × 221,776.38
  4. Step 4: Simplify right side
    382,943.70x = 117,190,289,631.22
  5. Step 5: Solve for x
    x = 117,190,289,631.22/382,943.70
  6. Step 6: Final answer
    x = 306,024.85

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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.