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Finding the Fourth Proportional to 554,954.16, 765,842.21 and 300,310.82

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Solution

The fourth proportional to 554,954.16, 765,842.21 and 300,310.82 is: 414,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,954.16 : 765,842.21 = 300,310.82 : x
  2. Step 2: Convert to fraction form
    554,954.16/765,842.21 = 300,310.82/x
  3. Step 3: Cross multiply
    554,954.16x = 765,842.21 × 300,310.82
  4. Step 4: Simplify right side
    554,954.16x = 229,990,696,744.95
  5. Step 5: Solve for x
    x = 229,990,696,744.95/554,954.16
  6. Step 6: Final answer
    x = 414,431.88

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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.