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Finding the Fourth Proportional to 479,903.40, 720,000.90 and 269,400.60

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Solution

The fourth proportional to 479,903.40, 720,000.90 and 269,400.60 is: 404,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,903.40 : 720,000.90 = 269,400.60 : x
  2. Step 2: Convert to fraction form
    479,903.40/720,000.90 = 269,400.60/x
  3. Step 3: Cross multiply
    479,903.40x = 720,000.90 × 269,400.60
  4. Step 4: Simplify right side
    479,903.40x = 193,968,674,460.54
  5. Step 5: Solve for x
    x = 193,968,674,460.54/479,903.40
  6. Step 6: Final answer
    x = 404,182.75

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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.