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Finding the Fourth Proportional to 371,920.63, 557,887.10 and 161,558.57

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Solution

The fourth proportional to 371,920.63, 557,887.10 and 161,558.57 is: 242,340.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,920.63 : 557,887.10 = 161,558.57 : x
  2. Step 2: Convert to fraction form
    371,920.63/557,887.10 = 161,558.57/x
  3. Step 3: Cross multiply
    371,920.63x = 557,887.10 × 161,558.57
  4. Step 4: Simplify right side
    371,920.63x = 90,131,439,546.26
  5. Step 5: Solve for x
    x = 90,131,439,546.26/371,920.63
  6. Step 6: Final answer
    x = 242,340.52

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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.