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Finding the Fourth Proportional to 279,081.13, 385,160.55 and 164,395.87

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Solution

The fourth proportional to 279,081.13, 385,160.55 and 164,395.87 is: 226,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,081.13 : 385,160.55 = 164,395.87 : x
  2. Step 2: Convert to fraction form
    279,081.13/385,160.55 = 164,395.87/x
  3. Step 3: Cross multiply
    279,081.13x = 385,160.55 × 164,395.87
  4. Step 4: Simplify right side
    279,081.13x = 63,318,802,744.03
  5. Step 5: Solve for x
    x = 63,318,802,744.03/279,081.13
  6. Step 6: Final answer
    x = 226,883.14

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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.