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Finding the Fourth Proportional to 396,671.80, 595,083.12 and 130,509.04

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Solution

The fourth proportional to 396,671.80, 595,083.12 and 130,509.04 is: 195,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,671.80 : 595,083.12 = 130,509.04 : x
  2. Step 2: Convert to fraction form
    396,671.80/595,083.12 = 130,509.04/x
  3. Step 3: Cross multiply
    396,671.80x = 595,083.12 × 130,509.04
  4. Step 4: Simplify right side
    396,671.80x = 77,663,726,711.40
  5. Step 5: Solve for x
    x = 77,663,726,711.40/396,671.80
  6. Step 6: Final answer
    x = 195,788.37

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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.