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Finding the Fourth Proportional to 318,674.31, 477,855.93 and 113,440.56

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Solution

The fourth proportional to 318,674.31, 477,855.93 and 113,440.56 is: 170,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,674.31 : 477,855.93 = 113,440.56 : x
  2. Step 2: Convert to fraction form
    318,674.31/477,855.93 = 113,440.56/x
  3. Step 3: Cross multiply
    318,674.31x = 477,855.93 × 113,440.56
  4. Step 4: Simplify right side
    318,674.31x = 54,208,244,298.52
  5. Step 5: Solve for x
    x = 54,208,244,298.52/318,674.31
  6. Step 6: Final answer
    x = 170,105.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.