Home / 381,669.20-572,285.10-115,389.80

Finding the Fourth Proportional to 381,669.20, 572,285.10 and 115,389.80

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Solution

The fourth proportional to 381,669.20, 572,285.10 and 115,389.80 is: 173,018.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,669.20 : 572,285.10 = 115,389.80 : x
  2. Step 2: Convert to fraction form
    381,669.20/572,285.10 = 115,389.80/x
  3. Step 3: Cross multiply
    381,669.20x = 572,285.10 × 115,389.80
  4. Step 4: Simplify right side
    381,669.20x = 66,035,863,231.98
  5. Step 5: Solve for x
    x = 66,035,863,231.98/381,669.20
  6. Step 6: Final answer
    x = 173,018.58

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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.