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Finding the Fourth Proportional to 499,918.56, 689,887.56 and 273,564

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Solution

The fourth proportional to 499,918.56, 689,887.56 and 273,564 is: 377,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,918.56 : 689,887.56 = 273,564 : x
  2. Step 2: Convert to fraction form
    499,918.56/689,887.56 = 273,564/x
  3. Step 3: Cross multiply
    499,918.56x = 689,887.56 × 273,564
  4. Step 4: Simplify right side
    499,918.56x = 188,728,400,463.84
  5. Step 5: Solve for x
    x = 188,728,400,463.84/499,918.56
  6. Step 6: Final answer
    x = 377,518.29

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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.