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Finding the Fourth Proportional to 218,257.05, 301,191.71 and 122,763.81

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Solution

The fourth proportional to 218,257.05, 301,191.71 and 122,763.81 is: 169,412.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,257.05 : 301,191.71 = 122,763.81 : x
  2. Step 2: Convert to fraction form
    218,257.05/301,191.71 = 122,763.81/x
  3. Step 3: Cross multiply
    218,257.05x = 301,191.71 × 122,763.81
  4. Step 4: Simplify right side
    218,257.05x = 36,975,441,246.20
  5. Step 5: Solve for x
    x = 36,975,441,246.20/218,257.05
  6. Step 6: Final answer
    x = 169,412.36

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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.