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Finding the Fourth Proportional to 323,982.64, 485,918.58 and 87,269.96

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Solution

The fourth proportional to 323,982.64, 485,918.58 and 87,269.96 is: 130,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,982.64 : 485,918.58 = 87,269.96 : x
  2. Step 2: Convert to fraction form
    323,982.64/485,918.58 = 87,269.96/x
  3. Step 3: Cross multiply
    323,982.64x = 485,918.58 × 87,269.96
  4. Step 4: Simplify right side
    323,982.64x = 42,406,096,581.92
  5. Step 5: Solve for x
    x = 42,406,096,581.92/323,982.64
  6. Step 6: Final answer
    x = 130,890.03

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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.