Home / 309,964.20-464,946.30-99,618.60

Finding the Fourth Proportional to 309,964.20, 464,946.30 and 99,618.60

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Solution

The fourth proportional to 309,964.20, 464,946.30 and 99,618.60 is: 149,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,964.20 : 464,946.30 = 99,618.60 : x
  2. Step 2: Convert to fraction form
    309,964.20/464,946.30 = 99,618.60/x
  3. Step 3: Cross multiply
    309,964.20x = 464,946.30 × 99,618.60
  4. Step 4: Simplify right side
    309,964.20x = 46,317,299,481.18
  5. Step 5: Solve for x
    x = 46,317,299,481.18/309,964.20
  6. Step 6: Final answer
    x = 149,427.90

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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.