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Finding the Fourth Proportional to 298,123.69, 447,128.50 and 115,754.51

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Solution

The fourth proportional to 298,123.69, 447,128.50 and 115,754.51 is: 173,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,123.69 : 447,128.50 = 115,754.51 : x
  2. Step 2: Convert to fraction form
    298,123.69/447,128.50 = 115,754.51/x
  3. Step 3: Cross multiply
    298,123.69x = 447,128.50 × 115,754.51
  4. Step 4: Simplify right side
    298,123.69x = 51,757,140,424.54
  5. Step 5: Solve for x
    x = 51,757,140,424.54/298,123.69
  6. Step 6: Final answer
    x = 173,609.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.