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Finding the Fourth Proportional to 194,463.80, 291,695.70 and 131,478.20

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Solution

The fourth proportional to 194,463.80, 291,695.70 and 131,478.20 is: 197,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,463.80 : 291,695.70 = 131,478.20 : x
  2. Step 2: Convert to fraction form
    194,463.80/291,695.70 = 131,478.20/x
  3. Step 3: Cross multiply
    194,463.80x = 291,695.70 × 131,478.20
  4. Step 4: Simplify right side
    194,463.80x = 38,351,625,583.74
  5. Step 5: Solve for x
    x = 38,351,625,583.74/194,463.80
  6. Step 6: Final answer
    x = 197,217.30

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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.