Home / 258,176.28-387,415.99-108,405.05

Finding the Fourth Proportional to 258,176.28, 387,415.99 and 108,405.05

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Solution

The fourth proportional to 258,176.28, 387,415.99 and 108,405.05 is: 162,671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,176.28 : 387,415.99 = 108,405.05 : x
  2. Step 2: Convert to fraction form
    258,176.28/387,415.99 = 108,405.05/x
  3. Step 3: Cross multiply
    258,176.28x = 387,415.99 × 108,405.05
  4. Step 4: Simplify right side
    258,176.28x = 41,997,849,766.75
  5. Step 5: Solve for x
    x = 41,997,849,766.75/258,176.28
  6. Step 6: Final answer
    x = 162,671.22

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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.