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Finding the Fourth Proportional to 268,881.20, 403,224.60 and 135,717.20

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Solution

The fourth proportional to 268,881.20, 403,224.60 and 135,717.20 is: 203,526.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,881.20 : 403,224.60 = 135,717.20 : x
  2. Step 2: Convert to fraction form
    268,881.20/403,224.60 = 135,717.20/x
  3. Step 3: Cross multiply
    268,881.20x = 403,224.60 × 135,717.20
  4. Step 4: Simplify right side
    268,881.20x = 54,724,513,683.12
  5. Step 5: Solve for x
    x = 54,724,513,683.12/268,881.20
  6. Step 6: Final answer
    x = 203,526.74

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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.