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Finding the Fourth Proportional to 268,453.96, 402,519.28 and 118,617.72

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Solution

The fourth proportional to 268,453.96, 402,519.28 and 118,617.72 is: 177,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,453.96 : 402,519.28 = 118,617.72 : x
  2. Step 2: Convert to fraction form
    268,453.96/402,519.28 = 118,617.72/x
  3. Step 3: Cross multiply
    268,453.96x = 402,519.28 × 118,617.72
  4. Step 4: Simplify right side
    268,453.96x = 47,745,919,249.64
  5. Step 5: Solve for x
    x = 47,745,919,249.64/268,453.96
  6. Step 6: Final answer
    x = 177,855.15

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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.