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Finding the Fourth Proportional to 554,755.68, 765,560.20 and 300,104.64

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Solution

The fourth proportional to 554,755.68, 765,560.20 and 300,104.64 is: 414,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,755.68 : 765,560.20 = 300,104.64 : x
  2. Step 2: Convert to fraction form
    554,755.68/765,560.20 = 300,104.64/x
  3. Step 3: Cross multiply
    554,755.68x = 765,560.20 × 300,104.64
  4. Step 4: Simplify right side
    554,755.68x = 229,748,168,219.33
  5. Step 5: Solve for x
    x = 229,748,168,219.33/554,755.68
  6. Step 6: Final answer
    x = 414,142.98

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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.