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Finding the Fourth Proportional to 390,894.82, 585,578.59 and 269,293.88

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Solution

The fourth proportional to 390,894.82, 585,578.59 and 269,293.88 is: 403,414.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,894.82 : 585,578.59 = 269,293.88 : x
  2. Step 2: Convert to fraction form
    390,894.82/585,578.59 = 269,293.88/x
  3. Step 3: Cross multiply
    390,894.82x = 585,578.59 × 269,293.88
  4. Step 4: Simplify right side
    390,894.82x = 157,692,730,546.03
  5. Step 5: Solve for x
    x = 157,692,730,546.03/390,894.82
  6. Step 6: Final answer
    x = 403,414.74

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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.