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Finding the Fourth Proportional to 221,193.72, 331,615.62 and 158,013.72

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Solution

The fourth proportional to 221,193.72, 331,615.62 and 158,013.72 is: 236,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,193.72 : 331,615.62 = 158,013.72 : x
  2. Step 2: Convert to fraction form
    221,193.72/331,615.62 = 158,013.72/x
  3. Step 3: Cross multiply
    221,193.72x = 331,615.62 × 158,013.72
  4. Step 4: Simplify right side
    221,193.72x = 52,399,817,726.31
  5. Step 5: Solve for x
    x = 52,399,817,726.31/221,193.72
  6. Step 6: Final answer
    x = 236,895.59

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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.