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Finding the Fourth Proportional to 218,367.68, 301,286.86 and 131,130.27

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Solution

The fourth proportional to 218,367.68, 301,286.86 and 131,130.27 is: 180,923.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,367.68 : 301,286.86 = 131,130.27 : x
  2. Step 2: Convert to fraction form
    218,367.68/301,286.86 = 131,130.27/x
  3. Step 3: Cross multiply
    218,367.68x = 301,286.86 × 131,130.27
  4. Step 4: Simplify right side
    218,367.68x = 39,507,827,536.34
  5. Step 5: Solve for x
    x = 39,507,827,536.34/218,367.68
  6. Step 6: Final answer
    x = 180,923.42

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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.