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Finding the Fourth Proportional to 453,045.40, 679,136.10 and 168,659.80

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Solution

The fourth proportional to 453,045.40, 679,136.10 and 168,659.80 is: 252,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,045.40 : 679,136.10 = 168,659.80 : x
  2. Step 2: Convert to fraction form
    453,045.40/679,136.10 = 168,659.80/x
  3. Step 3: Cross multiply
    453,045.40x = 679,136.10 × 168,659.80
  4. Step 4: Simplify right side
    453,045.40x = 114,542,958,798.78
  5. Step 5: Solve for x
    x = 114,542,958,798.78/453,045.40
  6. Step 6: Final answer
    x = 252,828.87

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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.