Home / 210,983.32-316,485.18-68,828.32

Finding the Fourth Proportional to 210,983.32, 316,485.18 and 68,828.32

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Solution

The fourth proportional to 210,983.32, 316,485.18 and 68,828.32 is: 103,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,983.32 : 316,485.18 = 68,828.32 : x
  2. Step 2: Convert to fraction form
    210,983.32/316,485.18 = 68,828.32/x
  3. Step 3: Cross multiply
    210,983.32x = 316,485.18 × 68,828.32
  4. Step 4: Simplify right side
    210,983.32x = 21,783,143,639.90
  5. Step 5: Solve for x
    x = 21,783,143,639.90/210,983.32
  6. Step 6: Final answer
    x = 103,245.81

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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.