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Finding the Fourth Proportional to 375,128.22, 517,308.36 and 344,009.27

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Solution

The fourth proportional to 375,128.22, 517,308.36 and 344,009.27 is: 474,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,128.22 : 517,308.36 = 344,009.27 : x
  2. Step 2: Convert to fraction form
    375,128.22/517,308.36 = 344,009.27/x
  3. Step 3: Cross multiply
    375,128.22x = 517,308.36 × 344,009.27
  4. Step 4: Simplify right side
    375,128.22x = 177,958,868,701.96
  5. Step 5: Solve for x
    x = 177,958,868,701.96/375,128.22
  6. Step 6: Final answer
    x = 474,394.78

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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.