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Finding the Fourth Proportional to 390,625.53, 584,770.89 and 236,284.44

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Solution

The fourth proportional to 390,625.53, 584,770.89 and 236,284.44 is: 353,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,625.53 : 584,770.89 = 236,284.44 : x
  2. Step 2: Convert to fraction form
    390,625.53/584,770.89 = 236,284.44/x
  3. Step 3: Cross multiply
    390,625.53x = 584,770.89 × 236,284.44
  4. Step 4: Simplify right side
    390,625.53x = 138,172,258,166.68
  5. Step 5: Solve for x
    x = 138,172,258,166.68/390,625.53
  6. Step 6: Final answer
    x = 353,720.51

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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.