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Finding the Fourth Proportional to 505,666.80, 758,271.78 and 268,958.88

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Solution

The fourth proportional to 505,666.80, 758,271.78 and 268,958.88 is: 403,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,666.80 : 758,271.78 = 268,958.88 : x
  2. Step 2: Convert to fraction form
    505,666.80/758,271.78 = 268,958.88/x
  3. Step 3: Cross multiply
    505,666.80x = 758,271.78 × 268,958.88
  4. Step 4: Simplify right side
    505,666.80x = 203,943,928,684.41
  5. Step 5: Solve for x
    x = 203,943,928,684.41/505,666.80
  6. Step 6: Final answer
    x = 403,316.83

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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.