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Finding the Fourth Proportional to 325,171.20, 487,756.80 and 185,203.20

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Solution

The fourth proportional to 325,171.20, 487,756.80 and 185,203.20 is: 277,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,171.20 : 487,756.80 = 185,203.20 : x
  2. Step 2: Convert to fraction form
    325,171.20/487,756.80 = 185,203.20/x
  3. Step 3: Cross multiply
    325,171.20x = 487,756.80 × 185,203.20
  4. Step 4: Simplify right side
    325,171.20x = 90,334,120,181.76
  5. Step 5: Solve for x
    x = 90,334,120,181.76/325,171.20
  6. Step 6: Final answer
    x = 277,804.80

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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.