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Finding the Fourth Proportional to 266,786.40, 399,195.45 and 243,166.80

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Solution

The fourth proportional to 266,786.40, 399,195.45 and 243,166.80 is: 363,853.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,786.40 : 399,195.45 = 243,166.80 : x
  2. Step 2: Convert to fraction form
    266,786.40/399,195.45 = 243,166.80/x
  3. Step 3: Cross multiply
    266,786.40x = 399,195.45 × 243,166.80
  4. Step 4: Simplify right side
    266,786.40x = 97,071,080,151.06
  5. Step 5: Solve for x
    x = 97,071,080,151.06/266,786.40
  6. Step 6: Final answer
    x = 363,853.18

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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.