Home / 309,904.40-464,986.20-99,606.80

Finding the Fourth Proportional to 309,904.40, 464,986.20 and 99,606.80

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Solution

The fourth proportional to 309,904.40, 464,986.20 and 99,606.80 is: 149,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,904.40 : 464,986.20 = 99,606.80 : x
  2. Step 2: Convert to fraction form
    309,904.40/464,986.20 = 99,606.80/x
  3. Step 3: Cross multiply
    309,904.40x = 464,986.20 × 99,606.80
  4. Step 4: Simplify right side
    309,904.40x = 46,315,787,426.16
  5. Step 5: Solve for x
    x = 46,315,787,426.16/309,904.40
  6. Step 6: Final answer
    x = 149,451.85

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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.