Home / 212,481.23-318,654.20-70,299.90

Finding the Fourth Proportional to 212,481.23, 318,654.20 and 70,299.90

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Solution

The fourth proportional to 212,481.23, 318,654.20 and 70,299.90 is: 105,427.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,481.23 : 318,654.20 = 70,299.90 : x
  2. Step 2: Convert to fraction form
    212,481.23/318,654.20 = 70,299.90/x
  3. Step 3: Cross multiply
    212,481.23x = 318,654.20 × 70,299.90
  4. Step 4: Simplify right side
    212,481.23x = 22,401,358,570.33
  5. Step 5: Solve for x
    x = 22,401,358,570.33/212,481.23
  6. Step 6: Final answer
    x = 105,427.47

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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.