Home / 212,295.09-318,445.83-54,520.05

Finding the Fourth Proportional to 212,295.09, 318,445.83 and 54,520.05

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Solution

The fourth proportional to 212,295.09, 318,445.83 and 54,520.05 is: 81,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,295.09 : 318,445.83 = 54,520.05 : x
  2. Step 2: Convert to fraction form
    212,295.09/318,445.83 = 54,520.05/x
  3. Step 3: Cross multiply
    212,295.09x = 318,445.83 × 54,520.05
  4. Step 4: Simplify right side
    212,295.09x = 17,361,682,573.89
  5. Step 5: Solve for x
    x = 17,361,682,573.89/212,295.09
  6. Step 6: Final answer
    x = 81,780.90

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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.