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Finding the Fourth Proportional to 499,717.80, 689,608.41 and 270,275.31

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Solution

The fourth proportional to 499,717.80, 689,608.41 and 270,275.31 is: 372,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,717.80 : 689,608.41 = 270,275.31 : x
  2. Step 2: Convert to fraction form
    499,717.80/689,608.41 = 270,275.31/x
  3. Step 3: Cross multiply
    499,717.80x = 689,608.41 × 270,275.31
  4. Step 4: Simplify right side
    499,717.80x = 186,384,126,791.36
  5. Step 5: Solve for x
    x = 186,384,126,791.36/499,717.80
  6. Step 6: Final answer
    x = 372,978.76

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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.