Home / 203,856.90-305,785.35-172,364.10

Finding the Fourth Proportional to 203,856.90, 305,785.35 and 172,364.10

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Solution

The fourth proportional to 203,856.90, 305,785.35 and 172,364.10 is: 258,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,856.90 : 305,785.35 = 172,364.10 : x
  2. Step 2: Convert to fraction form
    203,856.90/305,785.35 = 172,364.10/x
  3. Step 3: Cross multiply
    203,856.90x = 305,785.35 × 172,364.10
  4. Step 4: Simplify right side
    203,856.90x = 52,706,416,645.94
  5. Step 5: Solve for x
    x = 52,706,416,645.94/203,856.90
  6. Step 6: Final answer
    x = 258,546.15

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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.