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Finding the Fourth Proportional to 396,618.77, 594,801.81 and 130,317.50

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Solution

The fourth proportional to 396,618.77, 594,801.81 and 130,317.50 is: 195,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,618.77 : 594,801.81 = 130,317.50 : x
  2. Step 2: Convert to fraction form
    396,618.77/594,801.81 = 130,317.50/x
  3. Step 3: Cross multiply
    396,618.77x = 594,801.81 × 130,317.50
  4. Step 4: Simplify right side
    396,618.77x = 77,513,086,361.68
  5. Step 5: Solve for x
    x = 77,513,086,361.68/396,618.77
  6. Step 6: Final answer
    x = 195,434.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.