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Finding the Fourth Proportional to 266,821.39, 400,174.53 and 84,466.60

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Solution

The fourth proportional to 266,821.39, 400,174.53 and 84,466.60 is: 126,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,821.39 : 400,174.53 = 84,466.60 : x
  2. Step 2: Convert to fraction form
    266,821.39/400,174.53 = 84,466.60/x
  3. Step 3: Cross multiply
    266,821.39x = 400,174.53 × 84,466.60
  4. Step 4: Simplify right side
    266,821.39x = 33,801,380,638.51
  5. Step 5: Solve for x
    x = 33,801,380,638.51/266,821.39
  6. Step 6: Final answer
    x = 126,681.67

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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.