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Finding the Fourth Proportional to 355,164.93, 490,039.77 and 228,012.75

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Solution

The fourth proportional to 355,164.93, 490,039.77 and 228,012.75 is: 314,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,164.93 : 490,039.77 = 228,012.75 : x
  2. Step 2: Convert to fraction form
    355,164.93/490,039.77 = 228,012.75/x
  3. Step 3: Cross multiply
    355,164.93x = 490,039.77 × 228,012.75
  4. Step 4: Simplify right side
    355,164.93x = 111,735,315,567.07
  5. Step 5: Solve for x
    x = 111,735,315,567.07/355,164.93
  6. Step 6: Final answer
    x = 314,601.21

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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.