Home / 309,815.60-464,788.20-99,474.80

Finding the Fourth Proportional to 309,815.60, 464,788.20 and 99,474.80

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Solution

The fourth proportional to 309,815.60, 464,788.20 and 99,474.80 is: 149,233.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,815.60 : 464,788.20 = 99,474.80 : x
  2. Step 2: Convert to fraction form
    309,815.60/464,788.20 = 99,474.80/x
  3. Step 3: Cross multiply
    309,815.60x = 464,788.20 × 99,474.80
  4. Step 4: Simplify right side
    309,815.60x = 46,234,713,237.36
  5. Step 5: Solve for x
    x = 46,234,713,237.36/309,815.60
  6. Step 6: Final answer
    x = 149,233.01

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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.