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Finding the Fourth Proportional to 266,322.08, 399,540.72 and 79,348.64

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Solution

The fourth proportional to 266,322.08, 399,540.72 and 79,348.64 is: 119,040.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,322.08 : 399,540.72 = 79,348.64 : x
  2. Step 2: Convert to fraction form
    266,322.08/399,540.72 = 79,348.64/x
  3. Step 3: Cross multiply
    266,322.08x = 399,540.72 × 79,348.64
  4. Step 4: Simplify right side
    266,322.08x = 31,703,012,756.62
  5. Step 5: Solve for x
    x = 31,703,012,756.62/266,322.08
  6. Step 6: Final answer
    x = 119,040.12

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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.