Home / 216,085.07-324,128.38-66,325.38

Finding the Fourth Proportional to 216,085.07, 324,128.38 and 66,325.38

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Solution

The fourth proportional to 216,085.07, 324,128.38 and 66,325.38 is: 99,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,085.07 : 324,128.38 = 66,325.38 : x
  2. Step 2: Convert to fraction form
    216,085.07/324,128.38 = 66,325.38/x
  3. Step 3: Cross multiply
    216,085.07x = 324,128.38 × 66,325.38
  4. Step 4: Simplify right side
    216,085.07x = 21,497,936,440.81
  5. Step 5: Solve for x
    x = 21,497,936,440.81/216,085.07
  6. Step 6: Final answer
    x = 99,488.30

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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.