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Finding the Fourth Proportional to 211,763.11, 317,653.33 and 53,995.67

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Solution

The fourth proportional to 211,763.11, 317,653.33 and 53,995.67 is: 80,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,763.11 : 317,653.33 = 53,995.67 : x
  2. Step 2: Convert to fraction form
    211,763.11/317,653.33 = 53,995.67/x
  3. Step 3: Cross multiply
    211,763.11x = 317,653.33 × 53,995.67
  4. Step 4: Simplify right side
    211,763.11x = 17,151,904,381.08
  5. Step 5: Solve for x
    x = 17,151,904,381.08/211,763.11
  6. Step 6: Final answer
    x = 80,995.71

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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.