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Finding the Fourth Proportional to 326,012.56, 488,966.36 and 89,299.91

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Solution

The fourth proportional to 326,012.56, 488,966.36 and 89,299.91 is: 133,935.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,012.56 : 488,966.36 = 89,299.91 : x
  2. Step 2: Convert to fraction form
    326,012.56/488,966.36 = 89,299.91/x
  3. Step 3: Cross multiply
    326,012.56x = 488,966.36 × 89,299.91
  4. Step 4: Simplify right side
    326,012.56x = 43,664,652,716.94
  5. Step 5: Solve for x
    x = 43,664,652,716.94/326,012.56
  6. Step 6: Final answer
    x = 133,935.49

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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.