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Finding the Fourth Proportional to 478,048.44, 659,745.46 and 274,118.38

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Solution

The fourth proportional to 478,048.44, 659,745.46 and 274,118.38 is: 378,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,048.44 : 659,745.46 = 274,118.38 : x
  2. Step 2: Convert to fraction form
    478,048.44/659,745.46 = 274,118.38/x
  3. Step 3: Cross multiply
    478,048.44x = 659,745.46 × 274,118.38
  4. Step 4: Simplify right side
    478,048.44x = 180,848,356,707.56
  5. Step 5: Solve for x
    x = 180,848,356,707.56/478,048.44
  6. Step 6: Final answer
    x = 378,305.51

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1.5x scale

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.