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Finding the Fourth Proportional to 325,065.96, 487,620.81 and 125,388

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Solution

The fourth proportional to 325,065.96, 487,620.81 and 125,388 is: 188,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,065.96 : 487,620.81 = 125,388 : x
  2. Step 2: Convert to fraction form
    325,065.96/487,620.81 = 125,388/x
  3. Step 3: Cross multiply
    325,065.96x = 487,620.81 × 125,388
  4. Step 4: Simplify right side
    325,065.96x = 61,141,798,124.28
  5. Step 5: Solve for x
    x = 61,141,798,124.28/325,065.96
  6. Step 6: Final answer
    x = 188,090.44

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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.