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Finding the Fourth Proportional to 268,891.84, 403,243.74 and 79,301.92

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Solution

The fourth proportional to 268,891.84, 403,243.74 and 79,301.92 is: 118,925.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,891.84 : 403,243.74 = 79,301.92 : x
  2. Step 2: Convert to fraction form
    268,891.84/403,243.74 = 79,301.92/x
  3. Step 3: Cross multiply
    268,891.84x = 403,243.74 × 79,301.92
  4. Step 4: Simplify right side
    268,891.84x = 31,978,002,809.98
  5. Step 5: Solve for x
    x = 31,978,002,809.98/268,891.84
  6. Step 6: Final answer
    x = 118,925.15

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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.