Home / 325,142.07-487,800.77-135,539.43

Finding the Fourth Proportional to 325,142.07, 487,800.77 and 135,539.43

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Solution

The fourth proportional to 325,142.07, 487,800.77 and 135,539.43 is: 203,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,142.07 : 487,800.77 = 135,539.43 : x
  2. Step 2: Convert to fraction form
    325,142.07/487,800.77 = 135,539.43/x
  3. Step 3: Cross multiply
    325,142.07x = 487,800.77 × 135,539.43
  4. Step 4: Simplify right side
    325,142.07x = 66,116,237,641.66
  5. Step 5: Solve for x
    x = 66,116,237,641.66/325,142.07
  6. Step 6: Final answer
    x = 203,345.69

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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.