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Finding the Fourth Proportional to 266,380.12, 367,615.78 and 153,203

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Solution

The fourth proportional to 266,380.12, 367,615.78 and 153,203 is: 211,426.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,380.12 : 367,615.78 = 153,203 : x
  2. Step 2: Convert to fraction form
    266,380.12/367,615.78 = 153,203/x
  3. Step 3: Cross multiply
    266,380.12x = 367,615.78 × 153,203
  4. Step 4: Simplify right side
    266,380.12x = 56,319,840,343.34
  5. Step 5: Solve for x
    x = 56,319,840,343.34/266,380.12
  6. Step 6: Final answer
    x = 211,426.59

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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.