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Finding the Fourth Proportional to 279,086.67, 385,127.87 and 158,236.07

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Solution

The fourth proportional to 279,086.67, 385,127.87 and 158,236.07 is: 218,359.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,086.67 : 385,127.87 = 158,236.07 : x
  2. Step 2: Convert to fraction form
    279,086.67/385,127.87 = 158,236.07/x
  3. Step 3: Cross multiply
    279,086.67x = 385,127.87 × 158,236.07
  4. Step 4: Simplify right side
    279,086.67x = 60,941,117,879.45
  5. Step 5: Solve for x
    x = 60,941,117,879.45/279,086.67
  6. Step 6: Final answer
    x = 218,359.11

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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.