Home / 216,116.34-324,222.70-66,371.74

Finding the Fourth Proportional to 216,116.34, 324,222.70 and 66,371.74

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Solution

The fourth proportional to 216,116.34, 324,222.70 and 66,371.74 is: 99,572.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,116.34 : 324,222.70 = 66,371.74 : x
  2. Step 2: Convert to fraction form
    216,116.34/324,222.70 = 66,371.74/x
  3. Step 3: Cross multiply
    216,116.34x = 324,222.70 × 66,371.74
  4. Step 4: Simplify right side
    216,116.34x = 21,519,223,894.46
  5. Step 5: Solve for x
    x = 21,519,223,894.46/216,116.34
  6. Step 6: Final answer
    x = 99,572.41

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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.