Home / 660,668.27-991,150.02-211,416.09

Finding the Fourth Proportional to 660,668.27, 991,150.02 and 211,416.09

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Solution

The fourth proportional to 660,668.27, 991,150.02 and 211,416.09 is: 317,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,668.27 : 991,150.02 = 211,416.09 : x
  2. Step 2: Convert to fraction form
    660,668.27/991,150.02 = 211,416.09/x
  3. Step 3: Cross multiply
    660,668.27x = 991,150.02 × 211,416.09
  4. Step 4: Simplify right side
    660,668.27x = 209,545,063,690.23
  5. Step 5: Solve for x
    x = 209,545,063,690.23/660,668.27
  6. Step 6: Final answer
    x = 317,171.38

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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.