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Finding the Fourth Proportional to 561,757.08, 775,236.78 and 307,131.96

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Solution

The fourth proportional to 561,757.08, 775,236.78 and 307,131.96 is: 423,848.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,757.08 : 775,236.78 = 307,131.96 : x
  2. Step 2: Convert to fraction form
    561,757.08/775,236.78 = 307,131.96/x
  3. Step 3: Cross multiply
    561,757.08x = 775,236.78 × 307,131.96
  4. Step 4: Simplify right side
    561,757.08x = 238,099,991,705.49
  5. Step 5: Solve for x
    x = 238,099,991,705.49/561,757.08
  6. Step 6: Final answer
    x = 423,848.67

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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.