Home / 213,964.32-320,997.68-66,220.32

Finding the Fourth Proportional to 213,964.32, 320,997.68 and 66,220.32

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Solution

The fourth proportional to 213,964.32, 320,997.68 and 66,220.32 is: 99,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,964.32 : 320,997.68 = 66,220.32 : x
  2. Step 2: Convert to fraction form
    213,964.32/320,997.68 = 66,220.32/x
  3. Step 3: Cross multiply
    213,964.32x = 320,997.68 × 66,220.32
  4. Step 4: Simplify right side
    213,964.32x = 21,256,569,088.86
  5. Step 5: Solve for x
    x = 21,256,569,088.86/213,964.32
  6. Step 6: Final answer
    x = 99,346.33

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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.