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Finding the Fourth Proportional to 279,262.90, 385,384.49 and 151,939.42

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Solution

The fourth proportional to 279,262.90, 385,384.49 and 151,939.42 is: 209,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,262.90 : 385,384.49 = 151,939.42 : x
  2. Step 2: Convert to fraction form
    279,262.90/385,384.49 = 151,939.42/x
  3. Step 3: Cross multiply
    279,262.90x = 385,384.49 × 151,939.42
  4. Step 4: Simplify right side
    279,262.90x = 58,555,095,887.60
  5. Step 5: Solve for x
    x = 58,555,095,887.60/279,262.90
  6. Step 6: Final answer
    x = 209,677.32

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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.