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Finding the Fourth Proportional to 479,737.40, 661,249.20 and 340,083.60

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Solution

The fourth proportional to 479,737.40, 661,249.20 and 340,083.60 is: 468,756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,737.40 : 661,249.20 = 340,083.60 : x
  2. Step 2: Convert to fraction form
    479,737.40/661,249.20 = 340,083.60/x
  3. Step 3: Cross multiply
    479,737.40x = 661,249.20 × 340,083.60
  4. Step 4: Simplify right side
    479,737.40x = 224,880,008,433.12
  5. Step 5: Solve for x
    x = 224,880,008,433.12/479,737.40
  6. Step 6: Final answer
    x = 468,756.47

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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.