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Finding the Fourth Proportional to 279,668.97, 385,941.21 and 152,344.57

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Solution

The fourth proportional to 279,668.97, 385,941.21 and 152,344.57 is: 210,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,668.97 : 385,941.21 = 152,344.57 : x
  2. Step 2: Convert to fraction form
    279,668.97/385,941.21 = 152,344.57/x
  3. Step 3: Cross multiply
    279,668.97x = 385,941.21 × 152,344.57
  4. Step 4: Simplify right side
    279,668.97x = 58,796,047,098.74
  5. Step 5: Solve for x
    x = 58,796,047,098.74/279,668.97
  6. Step 6: Final answer
    x = 210,234.43

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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.