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Finding the Fourth Proportional to 251,490, 347,058.51 and 136,769.73

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Solution

The fourth proportional to 251,490, 347,058.51 and 136,769.73 is: 188,743.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,490 : 347,058.51 = 136,769.73 : x
  2. Step 2: Convert to fraction form
    251,490/347,058.51 = 136,769.73/x
  3. Step 3: Cross multiply
    251,490x = 347,058.51 × 136,769.73
  4. Step 4: Simplify right side
    251,490x = 47,467,098,706.90
  5. Step 5: Solve for x
    x = 47,467,098,706.90/251,490
  6. Step 6: Final answer
    x = 188,743.48

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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.