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Finding the Fourth Proportional to 497,092.26, 685,945.18 and 279,283.88

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Solution

The fourth proportional to 497,092.26, 685,945.18 and 279,283.88 is: 385,388.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,092.26 : 685,945.18 = 279,283.88 : x
  2. Step 2: Convert to fraction form
    497,092.26/685,945.18 = 279,283.88/x
  3. Step 3: Cross multiply
    497,092.26x = 685,945.18 × 279,283.88
  4. Step 4: Simplify right side
    497,092.26x = 191,573,431,337.70
  5. Step 5: Solve for x
    x = 191,573,431,337.70/497,092.26
  6. Step 6: Final answer
    x = 385,388.08

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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.