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Finding the Fourth Proportional to 268,279.80, 402,419.70 and 264,780.60

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Solution

The fourth proportional to 268,279.80, 402,419.70 and 264,780.60 is: 397,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,279.80 : 402,419.70 = 264,780.60 : x
  2. Step 2: Convert to fraction form
    268,279.80/402,419.70 = 264,780.60/x
  3. Step 3: Cross multiply
    268,279.80x = 402,419.70 × 264,780.60
  4. Step 4: Simplify right side
    268,279.80x = 106,552,929,617.82
  5. Step 5: Solve for x
    x = 106,552,929,617.82/268,279.80
  6. Step 6: Final answer
    x = 397,170.90

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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.