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Finding the Fourth Proportional to 279,109.80, 418,664.70 and 200,053.80

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Solution

The fourth proportional to 279,109.80, 418,664.70 and 200,053.80 is: 300,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,109.80 : 418,664.70 = 200,053.80 : x
  2. Step 2: Convert to fraction form
    279,109.80/418,664.70 = 200,053.80/x
  3. Step 3: Cross multiply
    279,109.80x = 418,664.70 × 200,053.80
  4. Step 4: Simplify right side
    279,109.80x = 83,755,464,160.86
  5. Step 5: Solve for x
    x = 83,755,464,160.86/279,109.80
  6. Step 6: Final answer
    x = 300,080.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.