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Finding the Fourth Proportional to 298,296.72, 411,650.84 and 170,979.76

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Solution

The fourth proportional to 298,296.72, 411,650.84 and 170,979.76 is: 235,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,296.72 : 411,650.84 = 170,979.76 : x
  2. Step 2: Convert to fraction form
    298,296.72/411,650.84 = 170,979.76/x
  3. Step 3: Cross multiply
    298,296.72x = 411,650.84 × 170,979.76
  4. Step 4: Simplify right side
    298,296.72x = 70,383,961,827.00
  5. Step 5: Solve for x
    x = 70,383,961,827.00/298,296.72
  6. Step 6: Final answer
    x = 235,952.85

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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.