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Finding the Fourth Proportional to 325,305.77, 487,991.75 and 112,045.86

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Solution

The fourth proportional to 325,305.77, 487,991.75 and 112,045.86 is: 168,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,305.77 : 487,991.75 = 112,045.86 : x
  2. Step 2: Convert to fraction form
    325,305.77/487,991.75 = 112,045.86/x
  3. Step 3: Cross multiply
    325,305.77x = 487,991.75 × 112,045.86
  4. Step 4: Simplify right side
    325,305.77x = 54,677,454,741.43
  5. Step 5: Solve for x
    x = 54,677,454,741.43/325,305.77
  6. Step 6: Final answer
    x = 168,080.19

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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.