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Finding the Fourth Proportional to 228,268.71, 342,402.74 and 91,553.49

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Solution

The fourth proportional to 228,268.71, 342,402.74 and 91,553.49 is: 137,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,268.71 : 342,402.74 = 91,553.49 : x
  2. Step 2: Convert to fraction form
    228,268.71/342,402.74 = 91,553.49/x
  3. Step 3: Cross multiply
    228,268.71x = 342,402.74 × 91,553.49
  4. Step 4: Simplify right side
    228,268.71x = 31,348,165,374.80
  5. Step 5: Solve for x
    x = 31,348,165,374.80/228,268.71
  6. Step 6: Final answer
    x = 137,330.10

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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.