Home / 300,623.40-450,938.88-90,249.12

Finding the Fourth Proportional to 300,623.40, 450,938.88 and 90,249.12

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Solution

The fourth proportional to 300,623.40, 450,938.88 and 90,249.12 is: 135,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,623.40 : 450,938.88 = 90,249.12 : x
  2. Step 2: Convert to fraction form
    300,623.40/450,938.88 = 90,249.12/x
  3. Step 3: Cross multiply
    300,623.40x = 450,938.88 × 90,249.12
  4. Step 4: Simplify right side
    300,623.40x = 40,696,837,093.79
  5. Step 5: Solve for x
    x = 40,696,837,093.79/300,623.40
  6. Step 6: Final answer
    x = 135,374.81

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1.5x scale

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.