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Finding the Fourth Proportional to 396,935.79, 595,495.95 and 130,698.61

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Solution

The fourth proportional to 396,935.79, 595,495.95 and 130,698.61 is: 196,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,935.79 : 595,495.95 = 130,698.61 : x
  2. Step 2: Convert to fraction form
    396,935.79/595,495.95 = 130,698.61/x
  3. Step 3: Cross multiply
    396,935.79x = 595,495.95 × 130,698.61
  4. Step 4: Simplify right side
    396,935.79x = 77,830,495,031.61
  5. Step 5: Solve for x
    x = 77,830,495,031.61/396,935.79
  6. Step 6: Final answer
    x = 196,078.30

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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.