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Finding the Fourth Proportional to 211,216.09, 316,894.87 and 69,067.93

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Solution

The fourth proportional to 211,216.09, 316,894.87 and 69,067.93 is: 103,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,216.09 : 316,894.87 = 69,067.93 : x
  2. Step 2: Convert to fraction form
    211,216.09/316,894.87 = 69,067.93/x
  3. Step 3: Cross multiply
    211,216.09x = 316,894.87 × 69,067.93
  4. Step 4: Simplify right side
    211,216.09x = 21,887,272,698.52
  5. Step 5: Solve for x
    x = 21,887,272,698.52/211,216.09
  6. Step 6: Final answer
    x = 103,625.03

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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.