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Finding the Fourth Proportional to 266,808.81, 400,183.61 and 67,129.23

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Solution

The fourth proportional to 266,808.81, 400,183.61 and 67,129.23 is: 100,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,808.81 : 400,183.61 = 67,129.23 : x
  2. Step 2: Convert to fraction form
    266,808.81/400,183.61 = 67,129.23/x
  3. Step 3: Cross multiply
    266,808.81x = 400,183.61 × 67,129.23
  4. Step 4: Simplify right side
    266,808.81x = 26,864,017,597.92
  5. Step 5: Solve for x
    x = 26,864,017,597.92/266,808.81
  6. Step 6: Final answer
    x = 100,686.40

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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.