Home / 211,635.38-317,462.80-53,865.20

Finding the Fourth Proportional to 211,635.38, 317,462.80 and 53,865.20

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Solution

The fourth proportional to 211,635.38, 317,462.80 and 53,865.20 is: 80,800.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,635.38 : 317,462.80 = 53,865.20 : x
  2. Step 2: Convert to fraction form
    211,635.38/317,462.80 = 53,865.20/x
  3. Step 3: Cross multiply
    211,635.38x = 317,462.80 × 53,865.20
  4. Step 4: Simplify right side
    211,635.38x = 17,100,197,214.56
  5. Step 5: Solve for x
    x = 17,100,197,214.56/211,635.38
  6. Step 6: Final answer
    x = 80,800.28

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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.