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Finding the Fourth Proportional to 381,561.48, 526,556.82 and 238,404.54

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Solution

The fourth proportional to 381,561.48, 526,556.82 and 238,404.54 is: 328,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,561.48 : 526,556.82 = 238,404.54 : x
  2. Step 2: Convert to fraction form
    381,561.48/526,556.82 = 238,404.54/x
  3. Step 3: Cross multiply
    381,561.48x = 526,556.82 × 238,404.54
  4. Step 4: Simplify right side
    381,561.48x = 125,533,536,455.96
  5. Step 5: Solve for x
    x = 125,533,536,455.96/381,561.48
  6. Step 6: Final answer
    x = 328,999.50

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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.