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Finding the Fourth Proportional to 266,046.30, 399,069.45 and 126,078.30

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Solution

The fourth proportional to 266,046.30, 399,069.45 and 126,078.30 is: 189,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,046.30 : 399,069.45 = 126,078.30 : x
  2. Step 2: Convert to fraction form
    266,046.30/399,069.45 = 126,078.30/x
  3. Step 3: Cross multiply
    266,046.30x = 399,069.45 × 126,078.30
  4. Step 4: Simplify right side
    266,046.30x = 50,313,997,837.94
  5. Step 5: Solve for x
    x = 50,313,997,837.94/266,046.30
  6. Step 6: Final answer
    x = 189,117.45

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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.