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Finding the Fourth Proportional to 320,108.30, 479,530.65 and 162,449.90

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Solution

The fourth proportional to 320,108.30, 479,530.65 and 162,449.90 is: 243,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,108.30 : 479,530.65 = 162,449.90 : x
  2. Step 2: Convert to fraction form
    320,108.30/479,530.65 = 162,449.90/x
  3. Step 3: Cross multiply
    320,108.30x = 479,530.65 × 162,449.90
  4. Step 4: Simplify right side
    320,108.30x = 77,899,706,139.44
  5. Step 5: Solve for x
    x = 77,899,706,139.44/320,108.30
  6. Step 6: Final answer
    x = 243,354.22

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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.