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Finding the Fourth Proportional to 490,898.22, 677,443.59 and 276,036.41

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Solution

The fourth proportional to 490,898.22, 677,443.59 and 276,036.41 is: 380,932.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,898.22 : 677,443.59 = 276,036.41 : x
  2. Step 2: Convert to fraction form
    490,898.22/677,443.59 = 276,036.41/x
  3. Step 3: Cross multiply
    490,898.22x = 677,443.59 × 276,036.41
  4. Step 4: Simplify right side
    490,898.22x = 186,999,096,561.11
  5. Step 5: Solve for x
    x = 186,999,096,561.11/490,898.22
  6. Step 6: Final answer
    x = 380,932.52

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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.