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Finding the Fourth Proportional to 418,268.43, 626,888.70 and 193,324.55

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Solution

The fourth proportional to 418,268.43, 626,888.70 and 193,324.55 is: 289,749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,268.43 : 626,888.70 = 193,324.55 : x
  2. Step 2: Convert to fraction form
    418,268.43/626,888.70 = 193,324.55/x
  3. Step 3: Cross multiply
    418,268.43x = 626,888.70 × 193,324.55
  4. Step 4: Simplify right side
    418,268.43x = 121,192,972,693.14
  5. Step 5: Solve for x
    x = 121,192,972,693.14/418,268.43
  6. Step 6: Final answer
    x = 289,749.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.