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Finding the Fourth Proportional to 266,049.28, 399,064.16 and 79,055.92

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Solution

The fourth proportional to 266,049.28, 399,064.16 and 79,055.92 is: 118,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,049.28 : 399,064.16 = 79,055.92 : x
  2. Step 2: Convert to fraction form
    266,049.28/399,064.16 = 79,055.92/x
  3. Step 3: Cross multiply
    266,049.28x = 399,064.16 × 79,055.92
  4. Step 4: Simplify right side
    266,049.28x = 31,548,384,307.83
  5. Step 5: Solve for x
    x = 31,548,384,307.83/266,049.28
  6. Step 6: Final answer
    x = 118,580.98

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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.