Home / 216,240.12-324,261.36-66,428.19

Finding the Fourth Proportional to 216,240.12, 324,261.36 and 66,428.19

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Solution

The fourth proportional to 216,240.12, 324,261.36 and 66,428.19 is: 99,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,240.12 : 324,261.36 = 66,428.19 : x
  2. Step 2: Convert to fraction form
    216,240.12/324,261.36 = 66,428.19/x
  3. Step 3: Cross multiply
    216,240.12x = 324,261.36 × 66,428.19
  4. Step 4: Simplify right side
    216,240.12x = 21,540,095,231.74
  5. Step 5: Solve for x
    x = 21,540,095,231.74/216,240.12
  6. Step 6: Final answer
    x = 99,611.93

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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.