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Finding the Fourth Proportional to 266,682.42, 399,978.84 and 89,189.16

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Solution

The fourth proportional to 266,682.42, 399,978.84 and 89,189.16 is: 133,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,682.42 : 399,978.84 = 89,189.16 : x
  2. Step 2: Convert to fraction form
    266,682.42/399,978.84 = 89,189.16/x
  3. Step 3: Cross multiply
    266,682.42x = 399,978.84 × 89,189.16
  4. Step 4: Simplify right side
    266,682.42x = 35,673,776,757.37
  5. Step 5: Solve for x
    x = 35,673,776,757.37/266,682.42
  6. Step 6: Final answer
    x = 133,768.76

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1.5x scale

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.