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Finding the Fourth Proportional to 279,149.49, 385,230.33 and 151,825.46

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Solution

The fourth proportional to 279,149.49, 385,230.33 and 151,825.46 is: 209,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,149.49 : 385,230.33 = 151,825.46 : x
  2. Step 2: Convert to fraction form
    279,149.49/385,230.33 = 151,825.46/x
  3. Step 3: Cross multiply
    279,149.49x = 385,230.33 × 151,825.46
  4. Step 4: Simplify right side
    279,149.49x = 58,487,770,132.05
  5. Step 5: Solve for x
    x = 58,487,770,132.05/279,149.49
  6. Step 6: Final answer
    x = 209,521.32

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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.