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Finding the Fourth Proportional to 279,049.70, 385,077.97 and 151,725.40

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Solution

The fourth proportional to 279,049.70, 385,077.97 and 151,725.40 is: 209,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,049.70 : 385,077.97 = 151,725.40 : x
  2. Step 2: Convert to fraction form
    279,049.70/385,077.97 = 151,725.40/x
  3. Step 3: Cross multiply
    279,049.70x = 385,077.97 × 151,725.40
  4. Step 4: Simplify right side
    279,049.70x = 58,426,109,029.44
  5. Step 5: Solve for x
    x = 58,426,109,029.44/279,049.70
  6. Step 6: Final answer
    x = 209,375.28

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1.5x scale

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.