Home / 212,289.09-318,510.17-107,028.78

Finding the Fourth Proportional to 212,289.09, 318,510.17 and 107,028.78

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Solution

The fourth proportional to 212,289.09, 318,510.17 and 107,028.78 is: 160,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,289.09 : 318,510.17 = 107,028.78 : x
  2. Step 2: Convert to fraction form
    212,289.09/318,510.17 = 107,028.78/x
  3. Step 3: Cross multiply
    212,289.09x = 318,510.17 × 107,028.78
  4. Step 4: Simplify right side
    212,289.09x = 34,089,754,912.69
  5. Step 5: Solve for x
    x = 34,089,754,912.69/212,289.09
  6. Step 6: Final answer
    x = 160,581.76

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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.