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Finding the Fourth Proportional to 381,290.40, 526,181.37 and 211,524.51

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Solution

The fourth proportional to 381,290.40, 526,181.37 and 211,524.51 is: 291,904.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,290.40 : 526,181.37 = 211,524.51 : x
  2. Step 2: Convert to fraction form
    381,290.40/526,181.37 = 211,524.51/x
  3. Step 3: Cross multiply
    381,290.40x = 526,181.37 × 211,524.51
  4. Step 4: Simplify right side
    381,290.40x = 111,300,256,460.38
  5. Step 5: Solve for x
    x = 111,300,256,460.38/381,290.40
  6. Step 6: Final answer
    x = 291,904.17

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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.