Home / 478,021.47-659,708.20-274,091.37

Finding the Fourth Proportional to 478,021.47, 659,708.20 and 274,091.37

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Solution

The fourth proportional to 478,021.47, 659,708.20 and 274,091.37 is: 378,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,021.47 : 659,708.20 = 274,091.37 : x
  2. Step 2: Convert to fraction form
    478,021.47/659,708.20 = 274,091.37/x
  3. Step 3: Cross multiply
    478,021.47x = 659,708.20 × 274,091.37
  4. Step 4: Simplify right side
    478,021.47x = 180,820,322,520.61
  5. Step 5: Solve for x
    x = 180,820,322,520.61/478,021.47
  6. Step 6: Final answer
    x = 378,268.20

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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.