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Finding the Fourth Proportional to 266,003.80, 399,135.30 and 202,802.20

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Solution

The fourth proportional to 266,003.80, 399,135.30 and 202,802.20 is: 304,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,003.80 : 399,135.30 = 202,802.20 : x
  2. Step 2: Convert to fraction form
    266,003.80/399,135.30 = 202,802.20/x
  3. Step 3: Cross multiply
    266,003.80x = 399,135.30 × 202,802.20
  4. Step 4: Simplify right side
    266,003.80x = 80,945,516,937.66
  5. Step 5: Solve for x
    x = 80,945,516,937.66/266,003.80
  6. Step 6: Final answer
    x = 304,302.11

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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.