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Finding the Fourth Proportional to 489,219.63, 675,196.91 and 298,343.73

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Solution

The fourth proportional to 489,219.63, 675,196.91 and 298,343.73 is: 411,759.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,219.63 : 675,196.91 = 298,343.73 : x
  2. Step 2: Convert to fraction form
    489,219.63/675,196.91 = 298,343.73/x
  3. Step 3: Cross multiply
    489,219.63x = 675,196.91 × 298,343.73
  4. Step 4: Simplify right side
    489,219.63x = 201,440,764,613.87
  5. Step 5: Solve for x
    x = 201,440,764,613.87/489,219.63
  6. Step 6: Final answer
    x = 411,759.37

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1.5x scale

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.