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Finding the Fourth Proportional to 474,540.67, 654,866.18 and 259,680.78

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Solution

The fourth proportional to 474,540.67, 654,866.18 and 259,680.78 is: 358,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,540.67 : 654,866.18 = 259,680.78 : x
  2. Step 2: Convert to fraction form
    474,540.67/654,866.18 = 259,680.78/x
  3. Step 3: Cross multiply
    474,540.67x = 654,866.18 × 259,680.78
  4. Step 4: Simplify right side
    474,540.67x = 170,056,160,418.02
  5. Step 5: Solve for x
    x = 170,056,160,418.02/474,540.67
  6. Step 6: Final answer
    x = 358,359.51

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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.