Home / 211,519.27-317,121.10-127,259.69

Finding the Fourth Proportional to 211,519.27, 317,121.10 and 127,259.69

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Solution

The fourth proportional to 211,519.27, 317,121.10 and 127,259.69 is: 190,794.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,519.27 : 317,121.10 = 127,259.69 : x
  2. Step 2: Convert to fraction form
    211,519.27/317,121.10 = 127,259.69/x
  3. Step 3: Cross multiply
    211,519.27x = 317,121.10 × 127,259.69
  4. Step 4: Simplify right side
    211,519.27x = 40,356,732,878.46
  5. Step 5: Solve for x
    x = 40,356,732,878.46/211,519.27
  6. Step 6: Final answer
    x = 190,794.59

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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.