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Finding the Fourth Proportional to 381,366.72, 572,054.04 and 115,129.44

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Solution

The fourth proportional to 381,366.72, 572,054.04 and 115,129.44 is: 172,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,366.72 : 572,054.04 = 115,129.44 : x
  2. Step 2: Convert to fraction form
    381,366.72/572,054.04 = 115,129.44/x
  3. Step 3: Cross multiply
    381,366.72x = 572,054.04 × 115,129.44
  4. Step 4: Simplify right side
    381,366.72x = 65,860,261,274.94
  5. Step 5: Solve for x
    x = 65,860,261,274.94/381,366.72
  6. Step 6: Final answer
    x = 172,695.36

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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.