Home / 311,056.20-429,145.29-203,687.46

Finding the Fourth Proportional to 311,056.20, 429,145.29 and 203,687.46

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Solution

The fourth proportional to 311,056.20, 429,145.29 and 203,687.46 is: 281,015.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,056.20 : 429,145.29 = 203,687.46 : x
  2. Step 2: Convert to fraction form
    311,056.20/429,145.29 = 203,687.46/x
  3. Step 3: Cross multiply
    311,056.20x = 429,145.29 × 203,687.46
  4. Step 4: Simplify right side
    311,056.20x = 87,411,514,091.06
  5. Step 5: Solve for x
    x = 87,411,514,091.06/311,056.20
  6. Step 6: Final answer
    x = 281,015.18

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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.