Home / 309,461.45-464,352.08-131,920.79

Finding the Fourth Proportional to 309,461.45, 464,352.08 and 131,920.79

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Solution

The fourth proportional to 309,461.45, 464,352.08 and 131,920.79 is: 197,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,461.45 : 464,352.08 = 131,920.79 : x
  2. Step 2: Convert to fraction form
    309,461.45/464,352.08 = 131,920.79/x
  3. Step 3: Cross multiply
    309,461.45x = 464,352.08 × 131,920.79
  4. Step 4: Simplify right side
    309,461.45x = 61,257,690,250.38
  5. Step 5: Solve for x
    x = 61,257,690,250.38/309,461.45
  6. Step 6: Final answer
    x = 197,949.34

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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.