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Finding the Fourth Proportional to 211,745.60, 317,618.40 and 113,441.60

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Solution

The fourth proportional to 211,745.60, 317,618.40 and 113,441.60 is: 170,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,745.60 : 317,618.40 = 113,441.60 : x
  2. Step 2: Convert to fraction form
    211,745.60/317,618.40 = 113,441.60/x
  3. Step 3: Cross multiply
    211,745.60x = 317,618.40 × 113,441.60
  4. Step 4: Simplify right side
    211,745.60x = 36,031,139,485.44
  5. Step 5: Solve for x
    x = 36,031,139,485.44/211,745.60
  6. Step 6: Final answer
    x = 170,162.40

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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.