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Finding the Fourth Proportional to 268,455.48, 402,673.90 and 68,777.85

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Solution

The fourth proportional to 268,455.48, 402,673.90 and 68,777.85 is: 103,164.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,455.48 : 402,673.90 = 68,777.85 : x
  2. Step 2: Convert to fraction form
    268,455.48/402,673.90 = 68,777.85/x
  3. Step 3: Cross multiply
    268,455.48x = 402,673.90 × 68,777.85
  4. Step 4: Simplify right side
    268,455.48x = 27,695,045,093.12
  5. Step 5: Solve for x
    x = 27,695,045,093.12/268,455.48
  6. Step 6: Final answer
    x = 103,164.39

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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.