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Finding the Fourth Proportional to 266,259.60, 399,616.20 and 108,601.20

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Solution

The fourth proportional to 266,259.60, 399,616.20 and 108,601.20 is: 162,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,259.60 : 399,616.20 = 108,601.20 : x
  2. Step 2: Convert to fraction form
    266,259.60/399,616.20 = 108,601.20/x
  3. Step 3: Cross multiply
    266,259.60x = 399,616.20 × 108,601.20
  4. Step 4: Simplify right side
    266,259.60x = 43,398,798,859.44
  5. Step 5: Solve for x
    x = 43,398,798,859.44/266,259.60
  6. Step 6: Final answer
    x = 162,994.31

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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.