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Finding the Fourth Proportional to 268,311.80, 402,467.70 and 264,812.60

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Solution

The fourth proportional to 268,311.80, 402,467.70 and 264,812.60 is: 397,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,311.80 : 402,467.70 = 264,812.60 : x
  2. Step 2: Convert to fraction form
    268,311.80/402,467.70 = 264,812.60/x
  3. Step 3: Cross multiply
    268,311.80x = 402,467.70 × 264,812.60
  4. Step 4: Simplify right side
    268,311.80x = 106,578,518,053.02
  5. Step 5: Solve for x
    x = 106,578,518,053.02/268,311.80
  6. Step 6: Final answer
    x = 397,218.90

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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.