Home / 205,961.30-308,423.55-135,458.90

Finding the Fourth Proportional to 205,961.30, 308,423.55 and 135,458.90

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Solution

The fourth proportional to 205,961.30, 308,423.55 and 135,458.90 is: 202,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,961.30 : 308,423.55 = 135,458.90 : x
  2. Step 2: Convert to fraction form
    205,961.30/308,423.55 = 135,458.90/x
  3. Step 3: Cross multiply
    205,961.30x = 308,423.55 × 135,458.90
  4. Step 4: Simplify right side
    205,961.30x = 41,778,714,817.10
  5. Step 5: Solve for x
    x = 41,778,714,817.10/205,961.30
  6. Step 6: Final answer
    x = 202,847.40

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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.