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Finding the Fourth Proportional to 390,682.32, 585,623.86 and 264,335.91

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Solution

The fourth proportional to 390,682.32, 585,623.86 and 264,335.91 is: 396,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,682.32 : 585,623.86 = 264,335.91 : x
  2. Step 2: Convert to fraction form
    390,682.32/585,623.86 = 264,335.91/x
  3. Step 3: Cross multiply
    390,682.32x = 585,623.86 × 264,335.91
  4. Step 4: Simplify right side
    390,682.32x = 154,801,413,093.88
  5. Step 5: Solve for x
    x = 154,801,413,093.88/390,682.32
  6. Step 6: Final answer
    x = 396,233.48

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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.