Home / 216,316.33-324,678.05-109,776.78

Finding the Fourth Proportional to 216,316.33, 324,678.05 and 109,776.78

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Solution

The fourth proportional to 216,316.33, 324,678.05 and 109,776.78 is: 164,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,316.33 : 324,678.05 = 109,776.78 : x
  2. Step 2: Convert to fraction form
    216,316.33/324,678.05 = 109,776.78/x
  3. Step 3: Cross multiply
    216,316.33x = 324,678.05 × 109,776.78
  4. Step 4: Simplify right side
    216,316.33x = 35,642,110,865.68
  5. Step 5: Solve for x
    x = 35,642,110,865.68/216,316.33
  6. Step 6: Final answer
    x = 164,768.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.