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Finding the Fourth Proportional to 311,118.96, 429,231.88 and 203,750.22

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Solution

The fourth proportional to 311,118.96, 429,231.88 and 203,750.22 is: 281,101.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,118.96 : 429,231.88 = 203,750.22 : x
  2. Step 2: Convert to fraction form
    311,118.96/429,231.88 = 203,750.22/x
  3. Step 3: Cross multiply
    311,118.96x = 429,231.88 × 203,750.22
  4. Step 4: Simplify right side
    311,118.96x = 87,456,089,981.01
  5. Step 5: Solve for x
    x = 87,456,089,981.01/311,118.96
  6. Step 6: Final answer
    x = 281,101.77

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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.