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Finding the Fourth Proportional to 660,771.52, 991,222.62 and 211,379.56

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Solution

The fourth proportional to 660,771.52, 991,222.62 and 211,379.56 is: 317,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,771.52 : 991,222.62 = 211,379.56 : x
  2. Step 2: Convert to fraction form
    660,771.52/991,222.62 = 211,379.56/x
  3. Step 3: Cross multiply
    660,771.52x = 991,222.62 × 211,379.56
  4. Step 4: Simplify right side
    660,771.52x = 209,524,201,277.65
  5. Step 5: Solve for x
    x = 209,524,201,277.65/660,771.52
  6. Step 6: Final answer
    x = 317,090.24

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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.