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Finding the Fourth Proportional to 453,065.40, 679,166.10 and 168,679.80

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Solution

The fourth proportional to 453,065.40, 679,166.10 and 168,679.80 is: 252,858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,065.40 : 679,166.10 = 168,679.80 : x
  2. Step 2: Convert to fraction form
    453,065.40/679,166.10 = 168,679.80/x
  3. Step 3: Cross multiply
    453,065.40x = 679,166.10 × 168,679.80
  4. Step 4: Simplify right side
    453,065.40x = 114,561,601,914.78
  5. Step 5: Solve for x
    x = 114,561,601,914.78/453,065.40
  6. Step 6: Final answer
    x = 252,858.86

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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.