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Finding the Fourth Proportional to 555,618.03, 766,756.56 and 300,969.21

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Solution

The fourth proportional to 555,618.03, 766,756.56 and 300,969.21 is: 415,339.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,618.03 : 766,756.56 = 300,969.21 : x
  2. Step 2: Convert to fraction form
    555,618.03/766,756.56 = 300,969.21/x
  3. Step 3: Cross multiply
    555,618.03x = 766,756.56 × 300,969.21
  4. Step 4: Simplify right side
    555,618.03x = 230,770,114,620.67
  5. Step 5: Solve for x
    x = 230,770,114,620.67/555,618.03
  6. Step 6: Final answer
    x = 415,339.50

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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.