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Finding the Fourth Proportional to 223,108.89, 307,890.27 and 122,506.89

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Solution

The fourth proportional to 223,108.89, 307,890.27 and 122,506.89 is: 169,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,108.89 : 307,890.27 = 122,506.89 : x
  2. Step 2: Convert to fraction form
    223,108.89/307,890.27 = 122,506.89/x
  3. Step 3: Cross multiply
    223,108.89x = 307,890.27 × 122,506.89
  4. Step 4: Simplify right side
    223,108.89x = 37,718,679,438.96
  5. Step 5: Solve for x
    x = 37,718,679,438.96/223,108.89
  6. Step 6: Final answer
    x = 169,059.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.