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Finding the Fourth Proportional to 320,706.08, 481,041.69 and 121,021.64

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Solution

The fourth proportional to 320,706.08, 481,041.69 and 121,021.64 is: 181,525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,706.08 : 481,041.69 = 121,021.64 : x
  2. Step 2: Convert to fraction form
    320,706.08/481,041.69 = 121,021.64/x
  3. Step 3: Cross multiply
    320,706.08x = 481,041.69 × 121,021.64
  4. Step 4: Simplify right side
    320,706.08x = 58,216,451,826.96
  5. Step 5: Solve for x
    x = 58,216,451,826.96/320,706.08
  6. Step 6: Final answer
    x = 181,525.88

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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.