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Finding the Fourth Proportional to 266,740.40, 399,973.80 and 79,727.60

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Solution

The fourth proportional to 266,740.40, 399,973.80 and 79,727.60 is: 119,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,740.40 : 399,973.80 = 79,727.60 : x
  2. Step 2: Convert to fraction form
    266,740.40/399,973.80 = 79,727.60/x
  3. Step 3: Cross multiply
    266,740.40x = 399,973.80 × 79,727.60
  4. Step 4: Simplify right side
    266,740.40x = 31,888,951,136.88
  5. Step 5: Solve for x
    x = 31,888,951,136.88/266,740.40
  6. Step 6: Final answer
    x = 119,550.51

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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.