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Finding the Fourth Proportional to 226,513.60, 339,640.80 and 68,718.40

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Solution

The fourth proportional to 226,513.60, 339,640.80 and 68,718.40 is: 103,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,513.60 : 339,640.80 = 68,718.40 : x
  2. Step 2: Convert to fraction form
    226,513.60/339,640.80 = 68,718.40/x
  3. Step 3: Cross multiply
    226,513.60x = 339,640.80 × 68,718.40
  4. Step 4: Simplify right side
    226,513.60x = 23,339,572,350.72
  5. Step 5: Solve for x
    x = 23,339,572,350.72/226,513.60
  6. Step 6: Final answer
    x = 103,038.28

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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.