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Finding the Fourth Proportional to 325,663.12, 488,508.38 and 89,005.15

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Solution

The fourth proportional to 325,663.12, 488,508.38 and 89,005.15 is: 133,511.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,663.12 : 488,508.38 = 89,005.15 : x
  2. Step 2: Convert to fraction form
    325,663.12/488,508.38 = 89,005.15/x
  3. Step 3: Cross multiply
    325,663.12x = 488,508.38 × 89,005.15
  4. Step 4: Simplify right side
    325,663.12x = 43,479,758,750.59
  5. Step 5: Solve for x
    x = 43,479,758,750.59/325,663.12
  6. Step 6: Final answer
    x = 133,511.46

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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.