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Finding the Fourth Proportional to 379,629, 569,538.72 and 113,388.48

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Solution

The fourth proportional to 379,629, 569,538.72 and 113,388.48 is: 170,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,629 : 569,538.72 = 113,388.48 : x
  2. Step 2: Convert to fraction form
    379,629/569,538.72 = 113,388.48/x
  3. Step 3: Cross multiply
    379,629x = 569,538.72 × 113,388.48
  4. Step 4: Simplify right side
    379,629x = 64,579,129,761.95
  5. Step 5: Solve for x
    x = 64,579,129,761.95/379,629
  6. Step 6: Final answer
    x = 170,111.16

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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.