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Finding the Fourth Proportional to 318,185.55, 477,245.52 and 107,818.02

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Solution

The fourth proportional to 318,185.55, 477,245.52 and 107,818.02 is: 161,715.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,185.55 : 477,245.52 = 107,818.02 : x
  2. Step 2: Convert to fraction form
    318,185.55/477,245.52 = 107,818.02/x
  3. Step 3: Cross multiply
    318,185.55x = 477,245.52 × 107,818.02
  4. Step 4: Simplify right side
    318,185.55x = 51,455,667,020.27
  5. Step 5: Solve for x
    x = 51,455,667,020.27/318,185.55
  6. Step 6: Final answer
    x = 161,715.91

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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.