Home / 383,012.20-528,649.98-221,841.28

Finding the Fourth Proportional to 383,012.20, 528,649.98 and 221,841.28

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Solution

The fourth proportional to 383,012.20, 528,649.98 and 221,841.28 is: 306,194.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,012.20 : 528,649.98 = 221,841.28 : x
  2. Step 2: Convert to fraction form
    383,012.20/528,649.98 = 221,841.28/x
  3. Step 3: Cross multiply
    383,012.20x = 528,649.98 × 221,841.28
  4. Step 4: Simplify right side
    383,012.20x = 117,276,388,235.17
  5. Step 5: Solve for x
    x = 117,276,388,235.17/383,012.20
  6. Step 6: Final answer
    x = 306,194.92

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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.