Home / 311,939.51-430,278.35-204,516.50

Finding the Fourth Proportional to 311,939.51, 430,278.35 and 204,516.50

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Solution

The fourth proportional to 311,939.51, 430,278.35 and 204,516.50 is: 282,102.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,939.51 : 430,278.35 = 204,516.50 : x
  2. Step 2: Convert to fraction form
    311,939.51/430,278.35 = 204,516.50/x
  3. Step 3: Cross multiply
    311,939.51x = 430,278.35 × 204,516.50
  4. Step 4: Simplify right side
    311,939.51x = 87,999,018,993.80
  5. Step 5: Solve for x
    x = 87,999,018,993.80/311,939.51
  6. Step 6: Final answer
    x = 282,102.84

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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.