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Finding the Fourth Proportional to 300,422.28, 450,788.70 and 132,060.80

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Solution

The fourth proportional to 300,422.28, 450,788.70 and 132,060.80 is: 198,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,422.28 : 450,788.70 = 132,060.80 : x
  2. Step 2: Convert to fraction form
    300,422.28/450,788.70 = 132,060.80/x
  3. Step 3: Cross multiply
    300,422.28x = 450,788.70 × 132,060.80
  4. Step 4: Simplify right side
    300,422.28x = 59,531,516,352.96
  5. Step 5: Solve for x
    x = 59,531,516,352.96/300,422.28
  6. Step 6: Final answer
    x = 198,159.46

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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.