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Finding the Fourth Proportional to 442,396.80, 610,481.28 and 251,383.68

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Solution

The fourth proportional to 442,396.80, 610,481.28 and 251,383.68 is: 346,894.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,396.80 : 610,481.28 = 251,383.68 : x
  2. Step 2: Convert to fraction form
    442,396.80/610,481.28 = 251,383.68/x
  3. Step 3: Cross multiply
    442,396.80x = 610,481.28 × 251,383.68
  4. Step 4: Simplify right side
    442,396.80x = 153,465,030,737.51
  5. Step 5: Solve for x
    x = 153,465,030,737.51/442,396.80
  6. Step 6: Final answer
    x = 346,894.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.