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Finding the Fourth Proportional to 379,435.94, 569,447.67 and 142,993.70

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Solution

The fourth proportional to 379,435.94, 569,447.67 and 142,993.70 is: 214,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,435.94 : 569,447.67 = 142,993.70 : x
  2. Step 2: Convert to fraction form
    379,435.94/569,447.67 = 142,993.70/x
  3. Step 3: Cross multiply
    379,435.94x = 569,447.67 × 142,993.70
  4. Step 4: Simplify right side
    379,435.94x = 81,427,429,289.68
  5. Step 5: Solve for x
    x = 81,427,429,289.68/379,435.94
  6. Step 6: Final answer
    x = 214,601.26

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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.