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Finding the Fourth Proportional to 378,561.08, 522,395.84 and 225,595.77

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Solution

The fourth proportional to 378,561.08, 522,395.84 and 225,595.77 is: 311,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,561.08 : 522,395.84 = 225,595.77 : x
  2. Step 2: Convert to fraction form
    378,561.08/522,395.84 = 225,595.77/x
  3. Step 3: Cross multiply
    378,561.08x = 522,395.84 × 225,595.77
  4. Step 4: Simplify right side
    378,561.08x = 117,850,290,641.62
  5. Step 5: Solve for x
    x = 117,850,290,641.62/378,561.08
  6. Step 6: Final answer
    x = 311,311.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.