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Finding the Fourth Proportional to 266,564.79, 399,867.80 and 89,072.42

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Solution

The fourth proportional to 266,564.79, 399,867.80 and 89,072.42 is: 133,615.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,564.79 : 399,867.80 = 89,072.42 : x
  2. Step 2: Convert to fraction form
    266,564.79/399,867.80 = 89,072.42/x
  3. Step 3: Cross multiply
    266,564.79x = 399,867.80 × 89,072.42
  4. Step 4: Simplify right side
    266,564.79x = 35,617,190,181.37
  5. Step 5: Solve for x
    x = 35,617,190,181.37/266,564.79
  6. Step 6: Final answer
    x = 133,615.51

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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.