Home / 228,971.74-315,991.74-142,981.60

Finding the Fourth Proportional to 228,971.74, 315,991.74 and 142,981.60

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Solution

The fourth proportional to 228,971.74, 315,991.74 and 142,981.60 is: 197,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,971.74 : 315,991.74 = 142,981.60 : x
  2. Step 2: Convert to fraction form
    228,971.74/315,991.74 = 142,981.60/x
  3. Step 3: Cross multiply
    228,971.74x = 315,991.74 × 142,981.60
  4. Step 4: Simplify right side
    228,971.74x = 45,181,004,571.98
  5. Step 5: Solve for x
    x = 45,181,004,571.98/228,971.74
  6. Step 6: Final answer
    x = 197,321.31

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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.