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Finding the Fourth Proportional to 279,195.36, 385,204.32 and 158,330.40

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Solution

The fourth proportional to 279,195.36, 385,204.32 and 158,330.40 is: 218,447.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,195.36 : 385,204.32 = 158,330.40 : x
  2. Step 2: Convert to fraction form
    279,195.36/385,204.32 = 158,330.40/x
  3. Step 3: Cross multiply
    279,195.36x = 385,204.32 × 158,330.40
  4. Step 4: Simplify right side
    279,195.36x = 60,989,554,067.33
  5. Step 5: Solve for x
    x = 60,989,554,067.33/279,195.36
  6. Step 6: Final answer
    x = 218,447.59

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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.