Home / 338,905.20-508,260.60-102,190.80

Finding the Fourth Proportional to 338,905.20, 508,260.60 and 102,190.80

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Solution

The fourth proportional to 338,905.20, 508,260.60 and 102,190.80 is: 153,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,905.20 : 508,260.60 = 102,190.80 : x
  2. Step 2: Convert to fraction form
    338,905.20/508,260.60 = 102,190.80/x
  3. Step 3: Cross multiply
    338,905.20x = 508,260.60 × 102,190.80
  4. Step 4: Simplify right side
    338,905.20x = 51,939,557,322.48
  5. Step 5: Solve for x
    x = 51,939,557,322.48/338,905.20
  6. Step 6: Final answer
    x = 153,256.89

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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.