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Finding the Fourth Proportional to 194,435.80, 291,264.90 and 131,450.20

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Solution

The fourth proportional to 194,435.80, 291,264.90 and 131,450.20 is: 196,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,435.80 : 291,264.90 = 131,450.20 : x
  2. Step 2: Convert to fraction form
    194,435.80/291,264.90 = 131,450.20/x
  3. Step 3: Cross multiply
    194,435.80x = 291,264.90 × 131,450.20
  4. Step 4: Simplify right side
    194,435.80x = 38,286,829,357.98
  5. Step 5: Solve for x
    x = 38,286,829,357.98/194,435.80
  6. Step 6: Final answer
    x = 196,912.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.