Home / 268,827.40-403,241.10-81,838.60

Finding the Fourth Proportional to 268,827.40, 403,241.10 and 81,838.60

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Solution

The fourth proportional to 268,827.40, 403,241.10 and 81,838.60 is: 122,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,827.40 : 403,241.10 = 81,838.60 : x
  2. Step 2: Convert to fraction form
    268,827.40/403,241.10 = 81,838.60/x
  3. Step 3: Cross multiply
    268,827.40x = 403,241.10 × 81,838.60
  4. Step 4: Simplify right side
    268,827.40x = 33,000,687,086.46
  5. Step 5: Solve for x
    x = 33,000,687,086.46/268,827.40
  6. Step 6: Final answer
    x = 122,757.90

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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.