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Finding the Fourth Proportional to 266,247, 367,421.49 and 145,388.52

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Solution

The fourth proportional to 266,247, 367,421.49 and 145,388.52 is: 200,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,247 : 367,421.49 = 145,388.52 : x
  2. Step 2: Convert to fraction form
    266,247/367,421.49 = 145,388.52/x
  3. Step 3: Cross multiply
    266,247x = 367,421.49 × 145,388.52
  4. Step 4: Simplify right side
    266,247x = 53,418,866,647.29
  5. Step 5: Solve for x
    x = 53,418,866,647.29/266,247
  6. Step 6: Final answer
    x = 200,636.50

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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.