Home / 383,051.32-528,530.34-221,896.72

Finding the Fourth Proportional to 383,051.32, 528,530.34 and 221,896.72

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Solution

The fourth proportional to 383,051.32, 528,530.34 and 221,896.72 is: 306,170.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,051.32 : 528,530.34 = 221,896.72 : x
  2. Step 2: Convert to fraction form
    383,051.32/528,530.34 = 221,896.72/x
  3. Step 3: Cross multiply
    383,051.32x = 528,530.34 × 221,896.72
  4. Step 4: Simplify right side
    383,051.32x = 117,279,148,866.49
  5. Step 5: Solve for x
    x = 117,279,148,866.49/383,051.32
  6. Step 6: Final answer
    x = 306,170.85

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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.