Home / 205,100.20-307,650.30-189,353.80

Finding the Fourth Proportional to 205,100.20, 307,650.30 and 189,353.80

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Solution

The fourth proportional to 205,100.20, 307,650.30 and 189,353.80 is: 284,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,100.20 : 307,650.30 = 189,353.80 : x
  2. Step 2: Convert to fraction form
    205,100.20/307,650.30 = 189,353.80/x
  3. Step 3: Cross multiply
    205,100.20x = 307,650.30 × 189,353.80
  4. Step 4: Simplify right side
    205,100.20x = 58,254,753,376.14
  5. Step 5: Solve for x
    x = 58,254,753,376.14/205,100.20
  6. Step 6: Final answer
    x = 284,030.70

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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.