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Finding the Fourth Proportional to 310,093.56, 427,902.84 and 187,631.55

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Solution

The fourth proportional to 310,093.56, 427,902.84 and 187,631.55 is: 258,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,093.56 : 427,902.84 = 187,631.55 : x
  2. Step 2: Convert to fraction form
    310,093.56/427,902.84 = 187,631.55/x
  3. Step 3: Cross multiply
    310,093.56x = 427,902.84 × 187,631.55
  4. Step 4: Simplify right side
    310,093.56x = 80,288,073,118.60
  5. Step 5: Solve for x
    x = 80,288,073,118.60/310,093.56
  6. Step 6: Final answer
    x = 258,915.64

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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.