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Finding the Fourth Proportional to 268,305.80, 402,458.70 and 264,806.60

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Solution

The fourth proportional to 268,305.80, 402,458.70 and 264,806.60 is: 397,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,305.80 : 402,458.70 = 264,806.60 : x
  2. Step 2: Convert to fraction form
    268,305.80/402,458.70 = 264,806.60/x
  3. Step 3: Cross multiply
    268,305.80x = 402,458.70 × 264,806.60
  4. Step 4: Simplify right side
    268,305.80x = 106,573,719,987.42
  5. Step 5: Solve for x
    x = 106,573,719,987.42/268,305.80
  6. Step 6: Final answer
    x = 397,209.90

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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.