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Finding the Fourth Proportional to 481,128.58, 663,978.27 and 266,268.70

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Solution

The fourth proportional to 481,128.58, 663,978.27 and 266,268.70 is: 367,462.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,128.58 : 663,978.27 = 266,268.70 : x
  2. Step 2: Convert to fraction form
    481,128.58/663,978.27 = 266,268.70/x
  3. Step 3: Cross multiply
    481,128.58x = 663,978.27 × 266,268.70
  4. Step 4: Simplify right side
    481,128.58x = 176,796,630,781.15
  5. Step 5: Solve for x
    x = 176,796,630,781.15/481,128.58
  6. Step 6: Final answer
    x = 367,462.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.