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Finding the Fourth Proportional to 266,744.10, 400,428.69 and 210,622.05

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Solution

The fourth proportional to 266,744.10, 400,428.69 and 210,622.05 is: 316,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,744.10 : 400,428.69 = 210,622.05 : x
  2. Step 2: Convert to fraction form
    266,744.10/400,428.69 = 210,622.05/x
  3. Step 3: Cross multiply
    266,744.10x = 400,428.69 × 210,622.05
  4. Step 4: Simplify right side
    266,744.10x = 84,339,111,566.61
  5. Step 5: Solve for x
    x = 84,339,111,566.61/266,744.10
  6. Step 6: Final answer
    x = 316,179.86

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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.