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Finding the Fourth Proportional to 266,410.36, 399,812.70 and 126,169.32

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Solution

The fourth proportional to 266,410.36, 399,812.70 and 126,169.32 is: 189,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,410.36 : 399,812.70 = 126,169.32 : x
  2. Step 2: Convert to fraction form
    266,410.36/399,812.70 = 126,169.32/x
  3. Step 3: Cross multiply
    266,410.36x = 399,812.70 × 126,169.32
  4. Step 4: Simplify right side
    266,410.36x = 50,444,096,486.36
  5. Step 5: Solve for x
    x = 50,444,096,486.36/266,410.36
  6. Step 6: Final answer
    x = 189,347.35

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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.