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Finding the Fourth Proportional to 389,919.78, 584,760.60 and 165,276

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Solution

The fourth proportional to 389,919.78, 584,760.60 and 165,276 is: 247,863.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,919.78 : 584,760.60 = 165,276 : x
  2. Step 2: Convert to fraction form
    389,919.78/584,760.60 = 165,276/x
  3. Step 3: Cross multiply
    389,919.78x = 584,760.60 × 165,276
  4. Step 4: Simplify right side
    389,919.78x = 96,646,892,925.60
  5. Step 5: Solve for x
    x = 96,646,892,925.60/389,919.78
  6. Step 6: Final answer
    x = 247,863.53

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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.