Home / 212,290.30-318,440.31-54,520.12

Finding the Fourth Proportional to 212,290.30, 318,440.31 and 54,520.12

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Solution

The fourth proportional to 212,290.30, 318,440.31 and 54,520.12 is: 81,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,290.30 : 318,440.31 = 54,520.12 : x
  2. Step 2: Convert to fraction form
    212,290.30/318,440.31 = 54,520.12/x
  3. Step 3: Cross multiply
    212,290.30x = 318,440.31 × 54,520.12
  4. Step 4: Simplify right side
    212,290.30x = 17,361,403,914.04
  5. Step 5: Solve for x
    x = 17,361,403,914.04/212,290.30
  6. Step 6: Final answer
    x = 81,781.43

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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.