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Finding the Fourth Proportional to 279,158.28, 385,300.43 and 170,286.68

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Solution

The fourth proportional to 279,158.28, 385,300.43 and 170,286.68 is: 235,033.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,158.28 : 385,300.43 = 170,286.68 : x
  2. Step 2: Convert to fraction form
    279,158.28/385,300.43 = 170,286.68/x
  3. Step 3: Cross multiply
    279,158.28x = 385,300.43 × 170,286.68
  4. Step 4: Simplify right side
    279,158.28x = 65,611,528,249.34
  5. Step 5: Solve for x
    x = 65,611,528,249.34/279,158.28
  6. Step 6: Final answer
    x = 235,033.43

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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.