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Finding the Fourth Proportional to 295,398.20, 443,145.90 and 126,999.20

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Solution

The fourth proportional to 295,398.20, 443,145.90 and 126,999.20 is: 190,519.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,398.20 : 443,145.90 = 126,999.20 : x
  2. Step 2: Convert to fraction form
    295,398.20/443,145.90 = 126,999.20/x
  3. Step 3: Cross multiply
    295,398.20x = 443,145.90 × 126,999.20
  4. Step 4: Simplify right side
    295,398.20x = 56,279,174,783.28
  5. Step 5: Solve for x
    x = 56,279,174,783.28/295,398.20
  6. Step 6: Final answer
    x = 190,519.69

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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.