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Finding the Fourth Proportional to 216,739.94, 299,131.26 and 121,253.09

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Solution

The fourth proportional to 216,739.94, 299,131.26 and 121,253.09 is: 167,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,739.94 : 299,131.26 = 121,253.09 : x
  2. Step 2: Convert to fraction form
    216,739.94/299,131.26 = 121,253.09/x
  3. Step 3: Cross multiply
    216,739.94x = 299,131.26 × 121,253.09
  4. Step 4: Simplify right side
    216,739.94x = 36,270,589,590.59
  5. Step 5: Solve for x
    x = 36,270,589,590.59/216,739.94
  6. Step 6: Final answer
    x = 167,346.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.