Home / 216,282.64-324,325.06-66,470.72

Finding the Fourth Proportional to 216,282.64, 324,325.06 and 66,470.72

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Solution

The fourth proportional to 216,282.64, 324,325.06 and 66,470.72 is: 99,675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,282.64 : 324,325.06 = 66,470.72 : x
  2. Step 2: Convert to fraction form
    216,282.64/324,325.06 = 66,470.72/x
  3. Step 3: Cross multiply
    216,282.64x = 324,325.06 × 66,470.72
  4. Step 4: Simplify right side
    216,282.64x = 21,558,120,252.24
  5. Step 5: Solve for x
    x = 21,558,120,252.24/216,282.64
  6. Step 6: Final answer
    x = 99,675.68

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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.