Home / 212,628.40-318,942.60-106,340.20

Finding the Fourth Proportional to 212,628.40, 318,942.60 and 106,340.20

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Solution

The fourth proportional to 212,628.40, 318,942.60 and 106,340.20 is: 159,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,628.40 : 318,942.60 = 106,340.20 : x
  2. Step 2: Convert to fraction form
    212,628.40/318,942.60 = 106,340.20/x
  3. Step 3: Cross multiply
    212,628.40x = 318,942.60 × 106,340.20
  4. Step 4: Simplify right side
    212,628.40x = 33,916,419,872.52
  5. Step 5: Solve for x
    x = 33,916,419,872.52/212,628.40
  6. Step 6: Final answer
    x = 159,510.30

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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.