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Finding the Fourth Proportional to 381,820.39, 572,737.88 and 115,579.87

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Solution

The fourth proportional to 381,820.39, 572,737.88 and 115,579.87 is: 173,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,820.39 : 572,737.88 = 115,579.87 : x
  2. Step 2: Convert to fraction form
    381,820.39/572,737.88 = 115,579.87/x
  3. Step 3: Cross multiply
    381,820.39x = 572,737.88 × 115,579.87
  4. Step 4: Simplify right side
    381,820.39x = 66,196,969,714.48
  5. Step 5: Solve for x
    x = 66,196,969,714.48/381,820.39
  6. Step 6: Final answer
    x = 173,372.01

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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.