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Finding the Fourth Proportional to 390,618.72, 585,846 and 110,060.64

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Solution

The fourth proportional to 390,618.72, 585,846 and 110,060.64 is: 165,067.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,618.72 : 585,846 = 110,060.64 : x
  2. Step 2: Convert to fraction form
    390,618.72/585,846 = 110,060.64/x
  3. Step 3: Cross multiply
    390,618.72x = 585,846 × 110,060.64
  4. Step 4: Simplify right side
    390,618.72x = 64,478,585,701.44
  5. Step 5: Solve for x
    x = 64,478,585,701.44/390,618.72
  6. Step 6: Final answer
    x = 165,067.83

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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.