Home / 216,623.21-324,809.75-66,823.28

Finding the Fourth Proportional to 216,623.21, 324,809.75 and 66,823.28

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Solution

The fourth proportional to 216,623.21, 324,809.75 and 66,823.28 is: 100,196.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,623.21 : 324,809.75 = 66,823.28 : x
  2. Step 2: Convert to fraction form
    216,623.21/324,809.75 = 66,823.28/x
  3. Step 3: Cross multiply
    216,623.21x = 324,809.75 × 66,823.28
  4. Step 4: Simplify right side
    216,623.21x = 21,704,852,536.86
  5. Step 5: Solve for x
    x = 21,704,852,536.86/216,623.21
  6. Step 6: Final answer
    x = 100,196.34

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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.