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Finding the Fourth Proportional to 268,839.50, 403,284.36 and 79,300.04

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Solution

The fourth proportional to 268,839.50, 403,284.36 and 79,300.04 is: 118,957.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,839.50 : 403,284.36 = 79,300.04 : x
  2. Step 2: Convert to fraction form
    268,839.50/403,284.36 = 79,300.04/x
  3. Step 3: Cross multiply
    268,839.50x = 403,284.36 × 79,300.04
  4. Step 4: Simplify right side
    268,839.50x = 31,980,465,879.37
  5. Step 5: Solve for x
    x = 31,980,465,879.37/268,839.50
  6. Step 6: Final answer
    x = 118,957.47

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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.