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Finding the Fourth Proportional to 449,718.21, 620,612.75 and 245,769.22

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Solution

The fourth proportional to 449,718.21, 620,612.75 and 245,769.22 is: 339,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,718.21 : 620,612.75 = 245,769.22 : x
  2. Step 2: Convert to fraction form
    449,718.21/620,612.75 = 245,769.22/x
  3. Step 3: Cross multiply
    449,718.21x = 620,612.75 × 245,769.22
  4. Step 4: Simplify right side
    449,718.21x = 152,527,510,260.71
  5. Step 5: Solve for x
    x = 152,527,510,260.71/449,718.21
  6. Step 6: Final answer
    x = 339,162.41

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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.