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Finding the Fourth Proportional to 328,424.82, 492,634.25 and 103,785.29

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Solution

The fourth proportional to 328,424.82, 492,634.25 and 103,785.29 is: 155,676.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,424.82 : 492,634.25 = 103,785.29 : x
  2. Step 2: Convert to fraction form
    328,424.82/492,634.25 = 103,785.29/x
  3. Step 3: Cross multiply
    328,424.82x = 492,634.25 × 103,785.29
  4. Step 4: Simplify right side
    328,424.82x = 51,128,188,500.18
  5. Step 5: Solve for x
    x = 51,128,188,500.18/328,424.82
  6. Step 6: Final answer
    x = 155,676.99

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Why These Related Problems?

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