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Finding the Fourth Proportional to 299,372.40, 447,762.60 and 268,009.20

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Solution

The fourth proportional to 299,372.40, 447,762.60 and 268,009.20 is: 400,853.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,372.40 : 447,762.60 = 268,009.20 : x
  2. Step 2: Convert to fraction form
    299,372.40/447,762.60 = 268,009.20/x
  3. Step 3: Cross multiply
    299,372.40x = 447,762.60 × 268,009.20
  4. Step 4: Simplify right side
    299,372.40x = 120,004,496,215.92
  5. Step 5: Solve for x
    x = 120,004,496,215.92/299,372.40
  6. Step 6: Final answer
    x = 400,853.57

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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.