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Finding the Fourth Proportional to 449,591.03, 620,428.28 and 245,637.56

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Solution

The fourth proportional to 449,591.03, 620,428.28 and 245,637.56 is: 338,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,591.03 : 620,428.28 = 245,637.56 : x
  2. Step 2: Convert to fraction form
    449,591.03/620,428.28 = 245,637.56/x
  3. Step 3: Cross multiply
    449,591.03x = 620,428.28 × 245,637.56
  4. Step 4: Simplify right side
    449,591.03x = 152,400,487,178.09
  5. Step 5: Solve for x
    x = 152,400,487,178.09/449,591.03
  6. Step 6: Final answer
    x = 338,975.82

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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.