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Finding the Fourth Proportional to 358,120.72, 494,207.58 and 196,992.28

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Solution

The fourth proportional to 358,120.72, 494,207.58 and 196,992.28 is: 271,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,120.72 : 494,207.58 = 196,992.28 : x
  2. Step 2: Convert to fraction form
    358,120.72/494,207.58 = 196,992.28/x
  3. Step 3: Cross multiply
    358,120.72x = 494,207.58 × 196,992.28
  4. Step 4: Simplify right side
    358,120.72x = 97,355,077,977.48
  5. Step 5: Solve for x
    x = 97,355,077,977.48/358,120.72
  6. Step 6: Final answer
    x = 271,849.89

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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.