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Finding the Fourth Proportional to 318,125.16, 477,245.70 and 131,034.60

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Solution

The fourth proportional to 318,125.16, 477,245.70 and 131,034.60 is: 196,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,125.16 : 477,245.70 = 131,034.60 : x
  2. Step 2: Convert to fraction form
    318,125.16/477,245.70 = 131,034.60/x
  3. Step 3: Cross multiply
    318,125.16x = 477,245.70 × 131,034.60
  4. Step 4: Simplify right side
    318,125.16x = 62,535,699,401.22
  5. Step 5: Solve for x
    x = 62,535,699,401.22/318,125.16
  6. Step 6: Final answer
    x = 196,575.77

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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.