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Finding the Fourth Proportional to 194,422.80, 291,634.20 and 131,437.20

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Solution

The fourth proportional to 194,422.80, 291,634.20 and 131,437.20 is: 197,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,422.80 : 291,634.20 = 131,437.20 : x
  2. Step 2: Convert to fraction form
    194,422.80/291,634.20 = 131,437.20/x
  3. Step 3: Cross multiply
    194,422.80x = 291,634.20 × 131,437.20
  4. Step 4: Simplify right side
    194,422.80x = 38,331,582,672.24
  5. Step 5: Solve for x
    x = 38,331,582,672.24/194,422.80
  6. Step 6: Final answer
    x = 197,155.80

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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.