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Finding the Fourth Proportional to 323,966.72, 485,984.64 and 136,997.12

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Solution

The fourth proportional to 323,966.72, 485,984.64 and 136,997.12 is: 205,510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,966.72 : 485,984.64 = 136,997.12 : x
  2. Step 2: Convert to fraction form
    323,966.72/485,984.64 = 136,997.12/x
  3. Step 3: Cross multiply
    323,966.72x = 485,984.64 × 136,997.12
  4. Step 4: Simplify right side
    323,966.72x = 66,578,496,044.24
  5. Step 5: Solve for x
    x = 66,578,496,044.24/323,966.72
  6. Step 6: Final answer
    x = 205,510.29

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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.