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Finding the Fourth Proportional to 266,655.16, 367,989.42 and 145,803.97

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Solution

The fourth proportional to 266,655.16, 367,989.42 and 145,803.97 is: 201,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,655.16 : 367,989.42 = 145,803.97 : x
  2. Step 2: Convert to fraction form
    266,655.16/367,989.42 = 145,803.97/x
  3. Step 3: Cross multiply
    266,655.16x = 367,989.42 × 145,803.97
  4. Step 4: Simplify right side
    266,655.16x = 53,654,318,354.00
  5. Step 5: Solve for x
    x = 53,654,318,354.00/266,655.16
  6. Step 6: Final answer
    x = 201,212.38

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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.