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Finding the Fourth Proportional to 490,581, 677,057.94 and 272,811.42

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Solution

The fourth proportional to 490,581, 677,057.94 and 272,811.42 is: 376,510.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,581 : 677,057.94 = 272,811.42 : x
  2. Step 2: Convert to fraction form
    490,581/677,057.94 = 272,811.42/x
  3. Step 3: Cross multiply
    490,581x = 677,057.94 × 272,811.42
  4. Step 4: Simplify right side
    490,581x = 184,709,138,033.68
  5. Step 5: Solve for x
    x = 184,709,138,033.68/490,581
  6. Step 6: Final answer
    x = 376,510.99

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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.