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Finding the Fourth Proportional to 212,059.44, 318,087.72 and 64,315.44

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Solution

The fourth proportional to 212,059.44, 318,087.72 and 64,315.44 is: 96,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,059.44 : 318,087.72 = 64,315.44 : x
  2. Step 2: Convert to fraction form
    212,059.44/318,087.72 = 64,315.44/x
  3. Step 3: Cross multiply
    212,059.44x = 318,087.72 × 64,315.44
  4. Step 4: Simplify right side
    212,059.44x = 20,457,951,670.40
  5. Step 5: Solve for x
    x = 20,457,951,670.40/212,059.44
  6. Step 6: Final answer
    x = 96,472.72

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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.