Home / 381,222.51-526,150.18-211,511.31

Finding the Fourth Proportional to 381,222.51, 526,150.18 and 211,511.31

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Solution

The fourth proportional to 381,222.51, 526,150.18 and 211,511.31 is: 291,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,222.51 : 526,150.18 = 211,511.31 : x
  2. Step 2: Convert to fraction form
    381,222.51/526,150.18 = 211,511.31/x
  3. Step 3: Cross multiply
    381,222.51x = 526,150.18 × 211,511.31
  4. Step 4: Simplify right side
    381,222.51x = 111,286,713,828.54
  5. Step 5: Solve for x
    x = 111,286,713,828.54/381,222.51
  6. Step 6: Final answer
    x = 291,920.63

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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.