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Finding the Fourth Proportional to 212,672.25, 318,899.88 and 70,466.22

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Solution

The fourth proportional to 212,672.25, 318,899.88 and 70,466.22 is: 105,663.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,672.25 : 318,899.88 = 70,466.22 : x
  2. Step 2: Convert to fraction form
    212,672.25/318,899.88 = 70,466.22/x
  3. Step 3: Cross multiply
    212,672.25x = 318,899.88 × 70,466.22
  4. Step 4: Simplify right side
    212,672.25x = 22,471,669,102.05
  5. Step 5: Solve for x
    x = 22,471,669,102.05/212,672.25
  6. Step 6: Final answer
    x = 105,663.38

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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.