Home / 305,021.03-457,492.46-80,399.12

Finding the Fourth Proportional to 305,021.03, 457,492.46 and 80,399.12

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Solution

The fourth proportional to 305,021.03, 457,492.46 and 80,399.12 is: 120,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,021.03 : 457,492.46 = 80,399.12 : x
  2. Step 2: Convert to fraction form
    305,021.03/457,492.46 = 80,399.12/x
  3. Step 3: Cross multiply
    305,021.03x = 457,492.46 × 80,399.12
  4. Step 4: Simplify right side
    305,021.03x = 36,781,988,501.18
  5. Step 5: Solve for x
    x = 36,781,988,501.18/305,021.03
  6. Step 6: Final answer
    x = 120,588.37

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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.