Home / 389,939.20-584,908.80-254,636.80

Finding the Fourth Proportional to 389,939.20, 584,908.80 and 254,636.80

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Solution

The fourth proportional to 389,939.20, 584,908.80 and 254,636.80 is: 381,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,939.20 : 584,908.80 = 254,636.80 : x
  2. Step 2: Convert to fraction form
    389,939.20/584,908.80 = 254,636.80/x
  3. Step 3: Cross multiply
    389,939.20x = 584,908.80 × 254,636.80
  4. Step 4: Simplify right side
    389,939.20x = 148,939,305,123.84
  5. Step 5: Solve for x
    x = 148,939,305,123.84/389,939.20
  6. Step 6: Final answer
    x = 381,955.20

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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.