Home / 325,313.82-487,985.31-142,932.60

Finding the Fourth Proportional to 325,313.82, 487,985.31 and 142,932.60

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Solution

The fourth proportional to 325,313.82, 487,985.31 and 142,932.60 is: 214,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,313.82 : 487,985.31 = 142,932.60 : x
  2. Step 2: Convert to fraction form
    325,313.82/487,985.31 = 142,932.60/x
  3. Step 3: Cross multiply
    325,313.82x = 487,985.31 × 142,932.60
  4. Step 4: Simplify right side
    325,313.82x = 69,749,009,120.11
  5. Step 5: Solve for x
    x = 69,749,009,120.11/325,313.82
  6. Step 6: Final answer
    x = 214,405.31

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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.