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Finding the Fourth Proportional to 358,240.28, 494,353.50 and 214,971.80

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Solution

The fourth proportional to 358,240.28, 494,353.50 and 214,971.80 is: 296,650.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,240.28 : 494,353.50 = 214,971.80 : x
  2. Step 2: Convert to fraction form
    358,240.28/494,353.50 = 214,971.80/x
  3. Step 3: Cross multiply
    358,240.28x = 494,353.50 × 214,971.80
  4. Step 4: Simplify right side
    358,240.28x = 106,272,061,731.30
  5. Step 5: Solve for x
    x = 106,272,061,731.30/358,240.28
  6. Step 6: Final answer
    x = 296,650.23

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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.