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Finding the Fourth Proportional to 266,751.36, 399,997.44 and 79,712.64

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Solution

The fourth proportional to 266,751.36, 399,997.44 and 79,712.64 is: 119,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,751.36 : 399,997.44 = 79,712.64 : x
  2. Step 2: Convert to fraction form
    266,751.36/399,997.44 = 79,712.64/x
  3. Step 3: Cross multiply
    266,751.36x = 399,997.44 × 79,712.64
  4. Step 4: Simplify right side
    266,751.36x = 31,884,851,935.64
  5. Step 5: Solve for x
    x = 31,884,851,935.64/266,751.36
  6. Step 6: Final answer
    x = 119,530.23

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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.