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Finding the Fourth Proportional to 279,679.56, 385,955.46 and 152,352.42

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Solution

The fourth proportional to 279,679.56, 385,955.46 and 152,352.42 is: 210,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,679.56 : 385,955.46 = 152,352.42 : x
  2. Step 2: Convert to fraction form
    279,679.56/385,955.46 = 152,352.42/x
  3. Step 3: Cross multiply
    279,679.56x = 385,955.46 × 152,352.42
  4. Step 4: Simplify right side
    279,679.56x = 58,801,248,343.21
  5. Step 5: Solve for x
    x = 58,801,248,343.21/279,679.56
  6. Step 6: Final answer
    x = 210,245.07

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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.