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Finding the Fourth Proportional to 279,668.55, 385,924.42 and 164,920.88

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Solution

The fourth proportional to 279,668.55, 385,924.42 and 164,920.88 is: 227,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,668.55 : 385,924.42 = 164,920.88 : x
  2. Step 2: Convert to fraction form
    279,668.55/385,924.42 = 164,920.88/x
  3. Step 3: Cross multiply
    279,668.55x = 385,924.42 × 164,920.88
  4. Step 4: Simplify right side
    279,668.55x = 63,646,993,032.35
  5. Step 5: Solve for x
    x = 63,646,993,032.35/279,668.55
  6. Step 6: Final answer
    x = 227,580.08

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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.