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Finding the Fourth Proportional to 499,559.31, 689,390.37 and 270,114.96

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Solution

The fourth proportional to 499,559.31, 689,390.37 and 270,114.96 is: 372,757.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,559.31 : 689,390.37 = 270,114.96 : x
  2. Step 2: Convert to fraction form
    499,559.31/689,390.37 = 270,114.96/x
  3. Step 3: Cross multiply
    499,559.31x = 689,390.37 × 270,114.96
  4. Step 4: Simplify right side
    499,559.31x = 186,214,652,216.94
  5. Step 5: Solve for x
    x = 186,214,652,216.94/499,559.31
  6. Step 6: Final answer
    x = 372,757.85

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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.