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Finding the Fourth Proportional to 268,267.80, 402,401.70 and 135,096.60

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Solution

The fourth proportional to 268,267.80, 402,401.70 and 135,096.60 is: 202,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,267.80 : 402,401.70 = 135,096.60 : x
  2. Step 2: Convert to fraction form
    268,267.80/402,401.70 = 135,096.60/x
  3. Step 3: Cross multiply
    268,267.80x = 402,401.70 × 135,096.60
  4. Step 4: Simplify right side
    268,267.80x = 54,363,101,504.22
  5. Step 5: Solve for x
    x = 54,363,101,504.22/268,267.80
  6. Step 6: Final answer
    x = 202,644.90

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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.