Home / 212,628.20-318,942.30-64,884.20

Finding the Fourth Proportional to 212,628.20, 318,942.30 and 64,884.20

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Solution

The fourth proportional to 212,628.20, 318,942.30 and 64,884.20 is: 97,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,628.20 : 318,942.30 = 64,884.20 : x
  2. Step 2: Convert to fraction form
    212,628.20/318,942.30 = 64,884.20/x
  3. Step 3: Cross multiply
    212,628.20x = 318,942.30 × 64,884.20
  4. Step 4: Simplify right side
    212,628.20x = 20,694,315,981.66
  5. Step 5: Solve for x
    x = 20,694,315,981.66/212,628.20
  6. Step 6: Final answer
    x = 97,326.30

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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.