Home / 259,485.63-389,280.96-109,725.69

Finding the Fourth Proportional to 259,485.63, 389,280.96 and 109,725.69

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Solution

The fourth proportional to 259,485.63, 389,280.96 and 109,725.69 is: 164,610.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,485.63 : 389,280.96 = 109,725.69 : x
  2. Step 2: Convert to fraction form
    259,485.63/389,280.96 = 109,725.69/x
  3. Step 3: Cross multiply
    259,485.63x = 389,280.96 × 109,725.69
  4. Step 4: Simplify right side
    259,485.63x = 42,714,121,939.86
  5. Step 5: Solve for x
    x = 42,714,121,939.86/259,485.63
  6. Step 6: Final answer
    x = 164,610.74

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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.