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Finding the Fourth Proportional to 323,820.30, 485,731.36 and 124,201.88

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Solution

The fourth proportional to 323,820.30, 485,731.36 and 124,201.88 is: 186,303.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,820.30 : 485,731.36 = 124,201.88 : x
  2. Step 2: Convert to fraction form
    323,820.30/485,731.36 = 124,201.88/x
  3. Step 3: Cross multiply
    323,820.30x = 485,731.36 × 124,201.88
  4. Step 4: Simplify right side
    323,820.30x = 60,328,745,968.80
  5. Step 5: Solve for x
    x = 60,328,745,968.80/323,820.30
  6. Step 6: Final answer
    x = 186,303.16

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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.