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Finding the Fourth Proportional to 218,580.53, 301,646.97 and 123,090.57

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Solution

The fourth proportional to 218,580.53, 301,646.97 and 123,090.57 is: 169,868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,580.53 : 301,646.97 = 123,090.57 : x
  2. Step 2: Convert to fraction form
    218,580.53/301,646.97 = 123,090.57/x
  3. Step 3: Cross multiply
    218,580.53x = 301,646.97 × 123,090.57
  4. Step 4: Simplify right side
    218,580.53x = 37,129,897,476.07
  5. Step 5: Solve for x
    x = 37,129,897,476.07/218,580.53
  6. Step 6: Final answer
    x = 169,868.28

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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.