Home / 289,186.90-399,021.20-181,694.65

Finding the Fourth Proportional to 289,186.90, 399,021.20 and 181,694.65

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Solution

The fourth proportional to 289,186.90, 399,021.20 and 181,694.65 is: 250,702.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,186.90 : 399,021.20 = 181,694.65 : x
  2. Step 2: Convert to fraction form
    289,186.90/399,021.20 = 181,694.65/x
  3. Step 3: Cross multiply
    289,186.90x = 399,021.20 × 181,694.65
  4. Step 4: Simplify right side
    289,186.90x = 72,500,016,733.26
  5. Step 5: Solve for x
    x = 72,500,016,733.26/289,186.90
  6. Step 6: Final answer
    x = 250,702.98

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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.