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Finding the Fourth Proportional to 266,101.20, 399,151.80 and 126,133.20

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Solution

The fourth proportional to 266,101.20, 399,151.80 and 126,133.20 is: 189,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,101.20 : 399,151.80 = 126,133.20 : x
  2. Step 2: Convert to fraction form
    266,101.20/399,151.80 = 126,133.20/x
  3. Step 3: Cross multiply
    266,101.20x = 399,151.80 × 126,133.20
  4. Step 4: Simplify right side
    266,101.20x = 50,346,293,819.76
  5. Step 5: Solve for x
    x = 50,346,293,819.76/266,101.20
  6. Step 6: Final answer
    x = 189,199.80

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1.5x scale

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.