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Finding the Fourth Proportional to 279,471, 385,767.18 and 166,291.32

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Solution

The fourth proportional to 279,471, 385,767.18 and 166,291.32 is: 229,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,471 : 385,767.18 = 166,291.32 : x
  2. Step 2: Convert to fraction form
    279,471/385,767.18 = 166,291.32/x
  3. Step 3: Cross multiply
    279,471x = 385,767.18 × 166,291.32
  4. Step 4: Simplify right side
    279,471x = 64,149,733,574.88
  5. Step 5: Solve for x
    x = 64,149,733,574.88/279,471
  6. Step 6: Final answer
    x = 229,539.86

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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.