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Finding the Fourth Proportional to 325,122.36, 487,309.32 and 125,342.88

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Solution

The fourth proportional to 325,122.36, 487,309.32 and 125,342.88 is: 187,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,122.36 : 487,309.32 = 125,342.88 : x
  2. Step 2: Convert to fraction form
    325,122.36/487,309.32 = 125,342.88/x
  3. Step 3: Cross multiply
    325,122.36x = 487,309.32 × 125,342.88
  4. Step 4: Simplify right side
    325,122.36x = 61,080,753,619.64
  5. Step 5: Solve for x
    x = 61,080,753,619.64/325,122.36
  6. Step 6: Final answer
    x = 187,870.05

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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.