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Finding the Fourth Proportional to 490,298.67, 676,575.79 and 275,474.52

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Solution

The fourth proportional to 490,298.67, 676,575.79 and 275,474.52 is: 380,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,298.67 : 676,575.79 = 275,474.52 : x
  2. Step 2: Convert to fraction form
    490,298.67/676,575.79 = 275,474.52/x
  3. Step 3: Cross multiply
    490,298.67x = 676,575.79 × 275,474.52
  4. Step 4: Simplify right side
    490,298.67x = 186,379,390,305.19
  5. Step 5: Solve for x
    x = 186,379,390,305.19/490,298.67
  6. Step 6: Final answer
    x = 380,134.40

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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.