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Finding the Fourth Proportional to 395,672.72, 545,942.04 and 234,447.20

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Solution

The fourth proportional to 395,672.72, 545,942.04 and 234,447.20 is: 323,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,672.72 : 545,942.04 = 234,447.20 : x
  2. Step 2: Convert to fraction form
    395,672.72/545,942.04 = 234,447.20/x
  3. Step 3: Cross multiply
    395,672.72x = 545,942.04 × 234,447.20
  4. Step 4: Simplify right side
    395,672.72x = 127,994,582,640.29
  5. Step 5: Solve for x
    x = 127,994,582,640.29/395,672.72
  6. Step 6: Final answer
    x = 323,485.99

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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.