Home / 420,516.24-580,321.32-239,222.16

Finding the Fourth Proportional to 420,516.24, 580,321.32 and 239,222.16

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Solution

The fourth proportional to 420,516.24, 580,321.32 and 239,222.16 is: 330,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,516.24 : 580,321.32 = 239,222.16 : x
  2. Step 2: Convert to fraction form
    420,516.24/580,321.32 = 239,222.16/x
  3. Step 3: Cross multiply
    420,516.24x = 580,321.32 × 239,222.16
  4. Step 4: Simplify right side
    420,516.24x = 138,825,719,664.45
  5. Step 5: Solve for x
    x = 138,825,719,664.45/420,516.24
  6. Step 6: Final answer
    x = 330,131.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.