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Finding the Fourth Proportional to 325,978.93, 488,873.54 and 126,254.77

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Solution

The fourth proportional to 325,978.93, 488,873.54 and 126,254.77 is: 189,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,978.93 : 488,873.54 = 126,254.77 : x
  2. Step 2: Convert to fraction form
    325,978.93/488,873.54 = 126,254.77/x
  3. Step 3: Cross multiply
    325,978.93x = 488,873.54 × 126,254.77
  4. Step 4: Simplify right side
    325,978.93x = 61,722,615,720.51
  5. Step 5: Solve for x
    x = 61,722,615,720.51/325,978.93
  6. Step 6: Final answer
    x = 189,345.41

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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.