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Finding the Fourth Proportional to 481,428.66, 664,317.90 and 266,514.90

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Solution

The fourth proportional to 481,428.66, 664,317.90 and 266,514.90 is: 367,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,428.66 : 664,317.90 = 266,514.90 : x
  2. Step 2: Convert to fraction form
    481,428.66/664,317.90 = 266,514.90/x
  3. Step 3: Cross multiply
    481,428.66x = 664,317.90 × 266,514.90
  4. Step 4: Simplify right side
    481,428.66x = 177,050,618,686.71
  5. Step 5: Solve for x
    x = 177,050,618,686.71/481,428.66
  6. Step 6: Final answer
    x = 367,760.86

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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.