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Finding the Fourth Proportional to 266,565.94, 399,912.09 and 79,582.30

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Solution

The fourth proportional to 266,565.94, 399,912.09 and 79,582.30 is: 119,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,565.94 : 399,912.09 = 79,582.30 : x
  2. Step 2: Convert to fraction form
    266,565.94/399,912.09 = 79,582.30/x
  3. Step 3: Cross multiply
    266,565.94x = 399,912.09 × 79,582.30
  4. Step 4: Simplify right side
    266,565.94x = 31,825,922,621.79
  5. Step 5: Solve for x
    x = 31,825,922,621.79/266,565.94
  6. Step 6: Final answer
    x = 119,392.31

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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.