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Finding the Fourth Proportional to 212,008.14, 318,059.12 and 69,847.67

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Solution

The fourth proportional to 212,008.14, 318,059.12 and 69,847.67 is: 104,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,008.14 : 318,059.12 = 69,847.67 : x
  2. Step 2: Convert to fraction form
    212,008.14/318,059.12 = 69,847.67/x
  3. Step 3: Cross multiply
    212,008.14x = 318,059.12 × 69,847.67
  4. Step 4: Simplify right side
    212,008.14x = 22,215,689,424.02
  5. Step 5: Solve for x
    x = 22,215,689,424.02/212,008.14
  6. Step 6: Final answer
    x = 104,786.96

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1.5x scale

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.