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Finding the Fourth Proportional to 266,426.04, 399,629.80 and 66,748.12

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Solution

The fourth proportional to 266,426.04, 399,629.80 and 66,748.12 is: 100,119.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,426.04 : 399,629.80 = 66,748.12 : x
  2. Step 2: Convert to fraction form
    266,426.04/399,629.80 = 66,748.12/x
  3. Step 3: Cross multiply
    266,426.04x = 399,629.80 × 66,748.12
  4. Step 4: Simplify right side
    266,426.04x = 26,674,537,845.98
  5. Step 5: Solve for x
    x = 26,674,537,845.98/266,426.04
  6. Step 6: Final answer
    x = 100,119.86

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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.