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Finding the Fourth Proportional to 452,387.40, 678,149.10 and 168,001.80

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Solution

The fourth proportional to 452,387.40, 678,149.10 and 168,001.80 is: 251,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,387.40 : 678,149.10 = 168,001.80 : x
  2. Step 2: Convert to fraction form
    452,387.40/678,149.10 = 168,001.80/x
  3. Step 3: Cross multiply
    452,387.40x = 678,149.10 × 168,001.80
  4. Step 4: Simplify right side
    452,387.40x = 113,930,269,468.38
  5. Step 5: Solve for x
    x = 113,930,269,468.38/452,387.40
  6. Step 6: Final answer
    x = 251,842.27

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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.