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Finding the Fourth Proportional to 372,678, 514,293.48 and 211,563.60

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Solution

The fourth proportional to 372,678, 514,293.48 and 211,563.60 is: 291,956.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,678 : 514,293.48 = 211,563.60 : x
  2. Step 2: Convert to fraction form
    372,678/514,293.48 = 211,563.60/x
  3. Step 3: Cross multiply
    372,678x = 514,293.48 × 211,563.60
  4. Step 4: Simplify right side
    372,678x = 108,805,780,085.33
  5. Step 5: Solve for x
    x = 108,805,780,085.33/372,678
  6. Step 6: Final answer
    x = 291,956.54

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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.