Home / 381,815.75-526,905.74-212,065.67

Finding the Fourth Proportional to 381,815.75, 526,905.74 and 212,065.67

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Solution

The fourth proportional to 381,815.75, 526,905.74 and 212,065.67 is: 292,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,815.75 : 526,905.74 = 212,065.67 : x
  2. Step 2: Convert to fraction form
    381,815.75/526,905.74 = 212,065.67/x
  3. Step 3: Cross multiply
    381,815.75x = 526,905.74 × 212,065.67
  4. Step 4: Simplify right side
    381,815.75x = 111,738,618,779.95
  5. Step 5: Solve for x
    x = 111,738,618,779.95/381,815.75
  6. Step 6: Final answer
    x = 292,650.63

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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.