Home / 289,976.20-434,273.10-178,001.80

Finding the Fourth Proportional to 289,976.20, 434,273.10 and 178,001.80

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Solution

The fourth proportional to 289,976.20, 434,273.10 and 178,001.80 is: 266,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,976.20 : 434,273.10 = 178,001.80 : x
  2. Step 2: Convert to fraction form
    289,976.20/434,273.10 = 178,001.80/x
  3. Step 3: Cross multiply
    289,976.20x = 434,273.10 × 178,001.80
  4. Step 4: Simplify right side
    289,976.20x = 77,301,393,491.58
  5. Step 5: Solve for x
    x = 77,301,393,491.58/289,976.20
  6. Step 6: Final answer
    x = 266,578.41

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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.