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Finding the Fourth Proportional to 321,397.60, 481,621.22 and 303,424.60

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Solution

The fourth proportional to 321,397.60, 481,621.22 and 303,424.60 is: 454,688.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,397.60 : 481,621.22 = 303,424.60 : x
  2. Step 2: Convert to fraction form
    321,397.60/481,621.22 = 303,424.60/x
  3. Step 3: Cross multiply
    321,397.60x = 481,621.22 × 303,424.60
  4. Step 4: Simplify right side
    321,397.60x = 146,135,726,030.01
  5. Step 5: Solve for x
    x = 146,135,726,030.01/321,397.60
  6. Step 6: Final answer
    x = 454,688.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.