Home / 211,965.12-317,255.40-155,790.36

Finding the Fourth Proportional to 211,965.12, 317,255.40 and 155,790.36

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Solution

The fourth proportional to 211,965.12, 317,255.40 and 155,790.36 is: 233,176.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,965.12 : 317,255.40 = 155,790.36 : x
  2. Step 2: Convert to fraction form
    211,965.12/317,255.40 = 155,790.36/x
  3. Step 3: Cross multiply
    211,965.12x = 317,255.40 × 155,790.36
  4. Step 4: Simplify right side
    211,965.12x = 49,425,332,977.94
  5. Step 5: Solve for x
    x = 49,425,332,977.94/211,965.12
  6. Step 6: Final answer
    x = 233,176.73

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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.