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Finding the Fourth Proportional to 268,318.88, 402,492.10 and 68,641

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Solution

The fourth proportional to 268,318.88, 402,492.10 and 68,641 is: 102,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,318.88 : 402,492.10 = 68,641 : x
  2. Step 2: Convert to fraction form
    268,318.88/402,492.10 = 68,641/x
  3. Step 3: Cross multiply
    268,318.88x = 402,492.10 × 68,641
  4. Step 4: Simplify right side
    268,318.88x = 27,627,460,236.10
  5. Step 5: Solve for x
    x = 27,627,460,236.10/268,318.88
  6. Step 6: Final answer
    x = 102,965.03

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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.