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Finding the Fourth Proportional to 499,577.74, 689,422.72 and 273,218.38

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Solution

The fourth proportional to 499,577.74, 689,422.72 and 273,218.38 is: 377,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,577.74 : 689,422.72 = 273,218.38 : x
  2. Step 2: Convert to fraction form
    499,577.74/689,422.72 = 273,218.38/x
  3. Step 3: Cross multiply
    499,577.74x = 689,422.72 × 273,218.38
  4. Step 4: Simplify right side
    499,577.74x = 188,362,958,693.59
  5. Step 5: Solve for x
    x = 188,362,958,693.59/499,577.74
  6. Step 6: Final answer
    x = 377,044.34

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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.