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Finding the Fourth Proportional to 402,757.79, 555,796.69 and 218,992.37

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Solution

The fourth proportional to 402,757.79, 555,796.69 and 218,992.37 is: 302,204.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,757.79 : 555,796.69 = 218,992.37 : x
  2. Step 2: Convert to fraction form
    402,757.79/555,796.69 = 218,992.37/x
  3. Step 3: Cross multiply
    402,757.79x = 555,796.69 × 218,992.37
  4. Step 4: Simplify right side
    402,757.79x = 121,715,231,054.79
  5. Step 5: Solve for x
    x = 121,715,231,054.79/402,757.79
  6. Step 6: Final answer
    x = 302,204.54

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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.