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Finding the Fourth Proportional to 499,725.72, 689,619.30 and 270,283.26

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Solution

The fourth proportional to 499,725.72, 689,619.30 and 270,283.26 is: 372,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,725.72 : 689,619.30 = 270,283.26 : x
  2. Step 2: Convert to fraction form
    499,725.72/689,619.30 = 270,283.26/x
  3. Step 3: Cross multiply
    499,725.72x = 689,619.30 × 270,283.26
  4. Step 4: Simplify right side
    499,725.72x = 186,392,552,562.92
  5. Step 5: Solve for x
    x = 186,392,552,562.92/499,725.72
  6. Step 6: Final answer
    x = 372,989.71

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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.