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Finding the Fourth Proportional to 212,110.20, 318,165.30 and 201,742.20

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Solution

The fourth proportional to 212,110.20, 318,165.30 and 201,742.20 is: 302,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,110.20 : 318,165.30 = 201,742.20 : x
  2. Step 2: Convert to fraction form
    212,110.20/318,165.30 = 201,742.20/x
  3. Step 3: Cross multiply
    212,110.20x = 318,165.30 × 201,742.20
  4. Step 4: Simplify right side
    212,110.20x = 64,187,367,585.66
  5. Step 5: Solve for x
    x = 64,187,367,585.66/212,110.20
  6. Step 6: Final answer
    x = 302,613.30

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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.