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Finding the Fourth Proportional to 245,028.80, 367,543.20 and 120,612.80

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Solution

The fourth proportional to 245,028.80, 367,543.20 and 120,612.80 is: 180,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,028.80 : 367,543.20 = 120,612.80 : x
  2. Step 2: Convert to fraction form
    245,028.80/367,543.20 = 120,612.80/x
  3. Step 3: Cross multiply
    245,028.80x = 367,543.20 × 120,612.80
  4. Step 4: Simplify right side
    245,028.80x = 44,330,414,472.96
  5. Step 5: Solve for x
    x = 44,330,414,472.96/245,028.80
  6. Step 6: Final answer
    x = 180,919.20

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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.