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Finding the Fourth Proportional to 415,910.70, 623,866.10 and 100,367.60

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Solution

The fourth proportional to 415,910.70, 623,866.10 and 100,367.60 is: 150,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,910.70 : 623,866.10 = 100,367.60 : x
  2. Step 2: Convert to fraction form
    415,910.70/623,866.10 = 100,367.60/x
  3. Step 3: Cross multiply
    415,910.70x = 623,866.10 × 100,367.60
  4. Step 4: Simplify right side
    415,910.70x = 62,615,943,178.36
  5. Step 5: Solve for x
    x = 62,615,943,178.36/415,910.70
  6. Step 6: Final answer
    x = 150,551.41

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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.