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Finding the Fourth Proportional to 325,804.77, 488,641.55 and 89,171.37

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Solution

The fourth proportional to 325,804.77, 488,641.55 and 89,171.37 is: 133,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,804.77 : 488,641.55 = 89,171.37 : x
  2. Step 2: Convert to fraction form
    325,804.77/488,641.55 = 89,171.37/x
  3. Step 3: Cross multiply
    325,804.77x = 488,641.55 × 89,171.37
  4. Step 4: Simplify right side
    325,804.77x = 43,572,836,006.57
  5. Step 5: Solve for x
    x = 43,572,836,006.57/325,804.77
  6. Step 6: Final answer
    x = 133,739.10

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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.