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Finding the Fourth Proportional to 268,881.59, 403,571.33 and 135,855.47

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Solution

The fourth proportional to 268,881.59, 403,571.33 and 135,855.47 is: 203,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,881.59 : 403,571.33 = 135,855.47 : x
  2. Step 2: Convert to fraction form
    268,881.59/403,571.33 = 135,855.47/x
  3. Step 3: Cross multiply
    268,881.59x = 403,571.33 × 135,855.47
  4. Step 4: Simplify right side
    268,881.59x = 54,827,372,036.40
  5. Step 5: Solve for x
    x = 54,827,372,036.40/268,881.59
  6. Step 6: Final answer
    x = 203,908.98

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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.