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Finding the Fourth Proportional to 555,031.18, 765,945.33 and 300,382.34

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Solution

The fourth proportional to 555,031.18, 765,945.33 and 300,382.34 is: 414,528.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,031.18 : 765,945.33 = 300,382.34 : x
  2. Step 2: Convert to fraction form
    555,031.18/765,945.33 = 300,382.34/x
  3. Step 3: Cross multiply
    555,031.18x = 765,945.33 × 300,382.34
  4. Step 4: Simplify right side
    555,031.18x = 230,076,450,537.47
  5. Step 5: Solve for x
    x = 230,076,450,537.47/555,031.18
  6. Step 6: Final answer
    x = 414,528.88

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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.