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Finding the Fourth Proportional to 613,139.34, 919,709.37 and 169,907.34

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Solution

The fourth proportional to 613,139.34, 919,709.37 and 169,907.34 is: 254,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,139.34 : 919,709.37 = 169,907.34 : x
  2. Step 2: Convert to fraction form
    613,139.34/919,709.37 = 169,907.34/x
  3. Step 3: Cross multiply
    613,139.34x = 919,709.37 × 169,907.34
  4. Step 4: Simplify right side
    613,139.34x = 156,265,372,629.78
  5. Step 5: Solve for x
    x = 156,265,372,629.78/613,139.34
  6. Step 6: Final answer
    x = 254,861.11

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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.