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Finding the Fourth Proportional to 266,655.40, 399,983.10 and 108,802.60

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Solution

The fourth proportional to 266,655.40, 399,983.10 and 108,802.60 is: 163,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,655.40 : 399,983.10 = 108,802.60 : x
  2. Step 2: Convert to fraction form
    266,655.40/399,983.10 = 108,802.60/x
  3. Step 3: Cross multiply
    266,655.40x = 399,983.10 × 108,802.60
  4. Step 4: Simplify right side
    266,655.40x = 43,519,201,236.06
  5. Step 5: Solve for x
    x = 43,519,201,236.06/266,655.40
  6. Step 6: Final answer
    x = 163,203.90

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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.