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Finding the Fourth Proportional to 325,576.60, 487,976.10 and 136,036.60

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Solution

The fourth proportional to 325,576.60, 487,976.10 and 136,036.60 is: 203,892.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,576.60 : 487,976.10 = 136,036.60 : x
  2. Step 2: Convert to fraction form
    325,576.60/487,976.10 = 136,036.60/x
  3. Step 3: Cross multiply
    325,576.60x = 487,976.10 × 136,036.60
  4. Step 4: Simplify right side
    325,576.60x = 66,382,609,525.26
  5. Step 5: Solve for x
    x = 66,382,609,525.26/325,576.60
  6. Step 6: Final answer
    x = 203,892.45

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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.