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Finding the Fourth Proportional to 268,875.48, 403,246.26 and 81,884.28

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Solution

The fourth proportional to 268,875.48, 403,246.26 and 81,884.28 is: 122,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,875.48 : 403,246.26 = 81,884.28 : x
  2. Step 2: Convert to fraction form
    268,875.48/403,246.26 = 81,884.28/x
  3. Step 3: Cross multiply
    268,875.48x = 403,246.26 × 81,884.28
  4. Step 4: Simplify right side
    268,875.48x = 33,019,529,662.79
  5. Step 5: Solve for x
    x = 33,019,529,662.79/268,875.48
  6. Step 6: Final answer
    x = 122,806.03

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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.