Home / 305,023.03-457,495.45-80,401.12

Finding the Fourth Proportional to 305,023.03, 457,495.45 and 80,401.12

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Solution

The fourth proportional to 305,023.03, 457,495.45 and 80,401.12 is: 120,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,023.03 : 457,495.45 = 80,401.12 : x
  2. Step 2: Convert to fraction form
    305,023.03/457,495.45 = 80,401.12/x
  3. Step 3: Cross multiply
    305,023.03x = 457,495.45 × 80,401.12
  4. Step 4: Simplify right side
    305,023.03x = 36,783,146,574.90
  5. Step 5: Solve for x
    x = 36,783,146,574.90/305,023.03
  6. Step 6: Final answer
    x = 120,591.37

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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.