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Finding the Fourth Proportional to 379,887.44, 569,620.71 and 155,405.43

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Solution

The fourth proportional to 379,887.44, 569,620.71 and 155,405.43 is: 233,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,887.44 : 569,620.71 = 155,405.43 : x
  2. Step 2: Convert to fraction form
    379,887.44/569,620.71 = 155,405.43/x
  3. Step 3: Cross multiply
    379,887.44x = 569,620.71 × 155,405.43
  4. Step 4: Simplify right side
    379,887.44x = 88,522,151,374.46
  5. Step 5: Solve for x
    x = 88,522,151,374.46/379,887.44
  6. Step 6: Final answer
    x = 233,022.06

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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.