Home / 212,515.36-318,634.46-98,616.40

Finding the Fourth Proportional to 212,515.36, 318,634.46 and 98,616.40

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Solution

The fourth proportional to 212,515.36, 318,634.46 and 98,616.40 is: 147,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,515.36 : 318,634.46 = 98,616.40 : x
  2. Step 2: Convert to fraction form
    212,515.36/318,634.46 = 98,616.40/x
  3. Step 3: Cross multiply
    212,515.36x = 318,634.46 × 98,616.40
  4. Step 4: Simplify right side
    212,515.36x = 31,422,583,361.14
  5. Step 5: Solve for x
    x = 31,422,583,361.14/212,515.36
  6. Step 6: Final answer
    x = 147,860.29

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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.