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Finding the Fourth Proportional to 218,300.80, 301,272.60 and 122,801.80

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Solution

The fourth proportional to 218,300.80, 301,272.60 and 122,801.80 is: 169,476.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,300.80 : 301,272.60 = 122,801.80 : x
  2. Step 2: Convert to fraction form
    218,300.80/301,272.60 = 122,801.80/x
  3. Step 3: Cross multiply
    218,300.80x = 301,272.60 × 122,801.80
  4. Step 4: Simplify right side
    218,300.80x = 36,996,817,570.68
  5. Step 5: Solve for x
    x = 36,996,817,570.68/218,300.80
  6. Step 6: Final answer
    x = 169,476.33

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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.