Home / 212,918.80-319,378.20-195,715.60

Finding the Fourth Proportional to 212,918.80, 319,378.20 and 195,715.60

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Solution

The fourth proportional to 212,918.80, 319,378.20 and 195,715.60 is: 293,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,918.80 : 319,378.20 = 195,715.60 : x
  2. Step 2: Convert to fraction form
    212,918.80/319,378.20 = 195,715.60/x
  3. Step 3: Cross multiply
    212,918.80x = 319,378.20 × 195,715.60
  4. Step 4: Simplify right side
    212,918.80x = 62,507,296,039.92
  5. Step 5: Solve for x
    x = 62,507,296,039.92/212,918.80
  6. Step 6: Final answer
    x = 293,573.40

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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.