Home / 212,935.80-318,739.23-156,839.25

Finding the Fourth Proportional to 212,935.80, 318,739.23 and 156,839.25

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Solution

The fourth proportional to 212,935.80, 318,739.23 and 156,839.25 is: 234,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,935.80 : 318,739.23 = 156,839.25 : x
  2. Step 2: Convert to fraction form
    212,935.80/318,739.23 = 156,839.25/x
  3. Step 3: Cross multiply
    212,935.80x = 318,739.23 × 156,839.25
  4. Step 4: Simplify right side
    212,935.80x = 49,990,821,778.78
  5. Step 5: Solve for x
    x = 49,990,821,778.78/212,935.80
  6. Step 6: Final answer
    x = 234,769.46

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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.