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Finding the Fourth Proportional to 255,665.44, 352,813.08 and 139,379.68

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Solution

The fourth proportional to 255,665.44, 352,813.08 and 139,379.68 is: 192,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,665.44 : 352,813.08 = 139,379.68 : x
  2. Step 2: Convert to fraction form
    255,665.44/352,813.08 = 139,379.68/x
  3. Step 3: Cross multiply
    255,665.44x = 352,813.08 × 139,379.68
  4. Step 4: Simplify right side
    255,665.44x = 49,174,974,190.21
  5. Step 5: Solve for x
    x = 49,174,974,190.21/255,665.44
  6. Step 6: Final answer
    x = 192,341.11

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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.