Home / 212,613.20-318,911.82-52,689.60

Finding the Fourth Proportional to 212,613.20, 318,911.82 and 52,689.60

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Solution

The fourth proportional to 212,613.20, 318,911.82 and 52,689.60 is: 79,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,613.20 : 318,911.82 = 52,689.60 : x
  2. Step 2: Convert to fraction form
    212,613.20/318,911.82 = 52,689.60/x
  3. Step 3: Cross multiply
    212,613.20x = 318,911.82 × 52,689.60
  4. Step 4: Simplify right side
    212,613.20x = 16,803,336,704.24
  5. Step 5: Solve for x
    x = 16,803,336,704.24/212,613.20
  6. Step 6: Final answer
    x = 79,032.42

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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.