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Finding the Fourth Proportional to 226,447.60, 339,703.80 and 68,688.40

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Solution

The fourth proportional to 226,447.60, 339,703.80 and 68,688.40 is: 103,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,447.60 : 339,703.80 = 68,688.40 : x
  2. Step 2: Convert to fraction form
    226,447.60/339,703.80 = 68,688.40/x
  3. Step 3: Cross multiply
    226,447.60x = 339,703.80 × 68,688.40
  4. Step 4: Simplify right side
    226,447.60x = 23,333,710,495.92
  5. Step 5: Solve for x
    x = 23,333,710,495.92/226,447.60
  6. Step 6: Final answer
    x = 103,042.43

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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.