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Finding the Fourth Proportional to 453,914.80, 680,872.20 and 121,490.80

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Solution

The fourth proportional to 453,914.80, 680,872.20 and 121,490.80 is: 182,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,914.80 : 680,872.20 = 121,490.80 : x
  2. Step 2: Convert to fraction form
    453,914.80/680,872.20 = 121,490.80/x
  3. Step 3: Cross multiply
    453,914.80x = 680,872.20 × 121,490.80
  4. Step 4: Simplify right side
    453,914.80x = 82,719,708,275.76
  5. Step 5: Solve for x
    x = 82,719,708,275.76/453,914.80
  6. Step 6: Final answer
    x = 182,236.20

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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.