Home / 381,821.60-572,732.40-204,237.20

Finding the Fourth Proportional to 381,821.60, 572,732.40 and 204,237.20

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Solution

The fourth proportional to 381,821.60, 572,732.40 and 204,237.20 is: 306,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,821.60 : 572,732.40 = 204,237.20 : x
  2. Step 2: Convert to fraction form
    381,821.60/572,732.40 = 204,237.20/x
  3. Step 3: Cross multiply
    381,821.60x = 572,732.40 × 204,237.20
  4. Step 4: Simplify right side
    381,821.60x = 116,973,261,725.28
  5. Step 5: Solve for x
    x = 116,973,261,725.28/381,821.60
  6. Step 6: Final answer
    x = 306,355.80

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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.