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Finding the Fourth Proportional to 323,984.64, 485,921.59 and 87,271.97

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Solution

The fourth proportional to 323,984.64, 485,921.59 and 87,271.97 is: 130,893.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,984.64 : 485,921.59 = 87,271.97 : x
  2. Step 2: Convert to fraction form
    323,984.64/485,921.59 = 87,271.97/x
  3. Step 3: Cross multiply
    323,984.64x = 485,921.59 × 87,271.97
  4. Step 4: Simplify right side
    323,984.64x = 42,407,331,558.86
  5. Step 5: Solve for x
    x = 42,407,331,558.86/323,984.64
  6. Step 6: Final answer
    x = 130,893.03

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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.