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Finding the Fourth Proportional to 268,937.48, 403,450 and 79,416.99

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Solution

The fourth proportional to 268,937.48, 403,450 and 79,416.99 is: 119,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,937.48 : 403,450 = 79,416.99 : x
  2. Step 2: Convert to fraction form
    268,937.48/403,450 = 79,416.99/x
  3. Step 3: Cross multiply
    268,937.48x = 403,450 × 79,416.99
  4. Step 4: Simplify right side
    268,937.48x = 32,040,784,615.50
  5. Step 5: Solve for x
    x = 32,040,784,615.50/268,937.48
  6. Step 6: Final answer
    x = 119,138.41

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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.