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Finding the Fourth Proportional to 266,431.70, 367,664.72 and 145,577.13

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Solution

The fourth proportional to 266,431.70, 367,664.72 and 145,577.13 is: 200,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,431.70 : 367,664.72 = 145,577.13 : x
  2. Step 2: Convert to fraction form
    266,431.70/367,664.72 = 145,577.13/x
  3. Step 3: Cross multiply
    266,431.70x = 367,664.72 × 145,577.13
  4. Step 4: Simplify right side
    266,431.70x = 53,523,574,011.97
  5. Step 5: Solve for x
    x = 53,523,574,011.97/266,431.70
  6. Step 6: Final answer
    x = 200,890.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.