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Finding the Fourth Proportional to 455,359.64, 682,992.65 and 151,721

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Solution

The fourth proportional to 455,359.64, 682,992.65 and 151,721 is: 227,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,359.64 : 682,992.65 = 151,721 : x
  2. Step 2: Convert to fraction form
    455,359.64/682,992.65 = 151,721/x
  3. Step 3: Cross multiply
    455,359.64x = 682,992.65 × 151,721
  4. Step 4: Simplify right side
    455,359.64x = 103,624,327,092.05
  5. Step 5: Solve for x
    x = 103,624,327,092.05/455,359.64
  6. Step 6: Final answer
    x = 227,565.90

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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.