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Finding the Fourth Proportional to 384,302.72, 529,906.38 and 248,157.92

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Solution

The fourth proportional to 384,302.72, 529,906.38 and 248,157.92 is: 342,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,302.72 : 529,906.38 = 248,157.92 : x
  2. Step 2: Convert to fraction form
    384,302.72/529,906.38 = 248,157.92/x
  3. Step 3: Cross multiply
    384,302.72x = 529,906.38 × 248,157.92
  4. Step 4: Simplify right side
    384,302.72x = 131,500,465,055.53
  5. Step 5: Solve for x
    x = 131,500,465,055.53/384,302.72
  6. Step 6: Final answer
    x = 342,179.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.