Home / 218,021.93-300,833.78-121,223.08

Finding the Fourth Proportional to 218,021.93, 300,833.78 and 121,223.08

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Solution

The fourth proportional to 218,021.93, 300,833.78 and 121,223.08 is: 167,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,021.93 : 300,833.78 = 121,223.08 : x
  2. Step 2: Convert to fraction form
    218,021.93/300,833.78 = 121,223.08/x
  3. Step 3: Cross multiply
    218,021.93x = 300,833.78 × 121,223.08
  4. Step 4: Simplify right side
    218,021.93x = 36,467,997,831.45
  5. Step 5: Solve for x
    x = 36,467,997,831.45/218,021.93
  6. Step 6: Final answer
    x = 167,267.57

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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.