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Finding the Fourth Proportional to 279,155.77, 385,111.41 and 171,662.29

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Solution

The fourth proportional to 279,155.77, 385,111.41 and 171,662.29 is: 236,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,155.77 : 385,111.41 = 171,662.29 : x
  2. Step 2: Convert to fraction form
    279,155.77/385,111.41 = 171,662.29/x
  3. Step 3: Cross multiply
    279,155.77x = 385,111.41 × 171,662.29
  4. Step 4: Simplify right side
    279,155.77x = 66,109,106,545.73
  5. Step 5: Solve for x
    x = 66,109,106,545.73/279,155.77
  6. Step 6: Final answer
    x = 236,817.98

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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.