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Finding the Fourth Proportional to 381,681.72, 526,386.06 and 327,618.36

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Solution

The fourth proportional to 381,681.72, 526,386.06 and 327,618.36 is: 451,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,681.72 : 526,386.06 = 327,618.36 : x
  2. Step 2: Convert to fraction form
    381,681.72/526,386.06 = 327,618.36/x
  3. Step 3: Cross multiply
    381,681.72x = 526,386.06 × 327,618.36
  4. Step 4: Simplify right side
    381,681.72x = 172,453,737,704.06
  5. Step 5: Solve for x
    x = 172,453,737,704.06/381,681.72
  6. Step 6: Final answer
    x = 451,826.03

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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.