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Finding the Fourth Proportional to 380,511.45, 525,105.45 and 210,745.44

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Solution

The fourth proportional to 380,511.45, 525,105.45 and 210,745.44 is: 290,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,511.45 : 525,105.45 = 210,745.44 : x
  2. Step 2: Convert to fraction form
    380,511.45/525,105.45 = 210,745.44/x
  3. Step 3: Cross multiply
    380,511.45x = 525,105.45 × 210,745.44
  4. Step 4: Simplify right side
    380,511.45x = 110,663,579,106.65
  5. Step 5: Solve for x
    x = 110,663,579,106.65/380,511.45
  6. Step 6: Final answer
    x = 290,828.51

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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.