Home / 251,720.10-378,017.55-133,622.10

Finding the Fourth Proportional to 251,720.10, 378,017.55 and 133,622.10

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Solution

The fourth proportional to 251,720.10, 378,017.55 and 133,622.10 is: 200,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,720.10 : 378,017.55 = 133,622.10 : x
  2. Step 2: Convert to fraction form
    251,720.10/378,017.55 = 133,622.10/x
  3. Step 3: Cross multiply
    251,720.10x = 378,017.55 × 133,622.10
  4. Step 4: Simplify right side
    251,720.10x = 50,511,498,867.86
  5. Step 5: Solve for x
    x = 50,511,498,867.86/251,720.10
  6. Step 6: Final answer
    x = 200,665.34

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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.