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Finding the Fourth Proportional to 396,681.76, 595,041.77 and 130,436.38

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Solution

The fourth proportional to 396,681.76, 595,041.77 and 130,436.38 is: 195,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,681.76 : 595,041.77 = 130,436.38 : x
  2. Step 2: Convert to fraction form
    396,681.76/595,041.77 = 130,436.38/x
  3. Step 3: Cross multiply
    396,681.76x = 595,041.77 × 130,436.38
  4. Step 4: Simplify right side
    396,681.76x = 77,615,094,427.59
  5. Step 5: Solve for x
    x = 77,615,094,427.59/396,681.76
  6. Step 6: Final answer
    x = 195,660.86

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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.