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Finding the Fourth Proportional to 449,131.74, 619,802.94 and 245,182.80

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Solution

The fourth proportional to 449,131.74, 619,802.94 and 245,182.80 is: 338,352.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,131.74 : 619,802.94 = 245,182.80 : x
  2. Step 2: Convert to fraction form
    449,131.74/619,802.94 = 245,182.80/x
  3. Step 3: Cross multiply
    449,131.74x = 619,802.94 × 245,182.80
  4. Step 4: Simplify right side
    449,131.74x = 151,965,020,277.43
  5. Step 5: Solve for x
    x = 151,965,020,277.43/449,131.74
  6. Step 6: Final answer
    x = 338,352.89

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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.